Counsel and guardians ad litem appointed outside of the guardian ad litem division as provided in section 43-272 shall apply to the court before which the proceedings were had for fees for services performed. The court upon hearing the application shall fix reasonable fees. The county board of the county wherein the proceedings were had shall allow the account, bill, or claim presented by any attorney or guardian ad litem for services performed under section 43-272 in the amount determined by the court. No such account, bill, or claim shall be allowed by the county board until the amount thereof shall have been determined by the court.