Ordination with fasting

In the course of a small study on fasting in the Bible, I realized that the book of Acts has exactly one reference to the ordination of elders (14:21-23) and one to the commissioning of missionaries (13:1-4), and in each of these places prayer with fasting is a prominent part of the ordination ceremonies.

Biblical narrative is not an absolute rule for the Church's practice. But wouldn't it be wise to imitate the apostles' example at least in this momentous act of the Church, by setting aside a period of time for prayer and fasting whenever elders, missionaries, and evangelists are commissioned for their daunting task?