An applicant for the probate of a will must prove to the court's satisfaction that:
(1) the testator is dead;
(2) four years have not elapsed since the date of the testator's death and before the application;
(3) the court has jurisdiction and venue over the estate;
(4) citation has been served and returned in the manner and for the period required by this title; and
(5) the person for whom letters testamentary or of administration are sought is entitled by law to the letters and is not disqualified.