Mathematics · Averages

There are four consecutive odd numbers, denoted as x1, x2, x3, and x4, and three consecutive even numbers, represented by y1, y2, and y3. The average of the four odd numbers is 6 less than the average of the three even numbers. Additionally, the sum of the three even numbers is 16 less than the sum of the four odd numbers. What is the average of x1, x2, x3, and x4?