Finding the Fourth Proportional to 9,222.03, 12,722.77 and 5,679.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,222.03 : 12,722.77 = 5,679.09 : x
2. Step 2: Convert to fraction form
   9,222.03/12,722.77 = 5,679.09/x
3. Step 3: Cross multiply
   9,222.03x = 12,722.77 × 5,679.09
4. Step 4: Simplify right side
   9,222.03x = 72,253,755.88
5. Step 5: Solve for x
   x = 72,253,755.88/9,222.03
6. Step 6: Final answer
   x = 7,834.91