At the second hearing the court shall have authority to order the sale of any district property. If the proceeds of such sale together with any cash remaining on hand to the credit of the district are insufficient to retire such indebtedness together with all costs and expenses, the court shall have authority to order the board of commissioners to levy assessments in the manner provided by law against the property in the district in amounts sufficient to retire said indebtedness and pay the costs and expenses. At such hearing any property owner within the district may appear and be heard for or against such levy.