Finding the Fourth Proportional to 22,737.89, 31,151.05 and 21,885.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,737.89 : 31,151.05 = 21,885.64 : x
2. Step 2: Convert to fraction form
   22,737.89/31,151.05 = 21,885.64/x
3. Step 3: Cross multiply
   22,737.89x = 31,151.05 × 21,885.64
4. Step 4: Simplify right side
   22,737.89x = 681,760,642.76
5. Step 5: Solve for x
   x = 681,760,642.76/22,737.89
6. Step 6: Final answer
   x = 29,983.46