The court or judge shall fix the time for hearing the petition, and shall order the clerk of the court to post in at least three public places in the county a notice of the filing of the petition, attached to a copy of the petition, and order a copy of the notice together with a copy of the petition to be personally served upon the founder, if living, and upon the spouse or surviving spouse of any founder, and upon any living grantor or donor of any other grant or gift set out in the petition, and may order such other or further notice to be given as the judge or court may deem proper. The notice shall be posted and served at least 10 days before the hearing.