If the governing body of any city which lies within or adjoins the boundaries of any proposed or organized fire district shall deem it advisable that all or a part of the city be included within the territory of any fire district, such city may be included within such district at the time of its organization or any time subsequent thereto. The governing body of the city shall, not less than 20 days prior to a regular meeting, publish a notice in the official city newspaper of its intention to petition the board of county commissioners that all or a part of the city be made a part of or be included within any proposed or organized fire district in the county and of a hearing on the proposal at the meeting. At the meeting, or any adjournment thereof, the governing body may adopt a resolution directed to the board of county commissioners requesting that all or part of the city be included within or added to the fire district, and the petition may be heard by the board of county commissioners at any meeting thereof. After the hearing, the board of county commissioners may make its order as in the case of the organization of a new district or the alteration and modification of the boundaries of an existing district.