Finding the Fourth Proportional to 21,898.71, 32,791.37 and 15,951.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,898.71 : 32,791.37 = 15,951.15 : x
2. Step 2: Convert to fraction form
   21,898.71/32,791.37 = 15,951.15/x
3. Step 3: Cross multiply
   21,898.71x = 32,791.37 × 15,951.15
4. Step 4: Simplify right side
   21,898.71x = 523,059,981.82
5. Step 5: Solve for x
   x = 523,059,981.82/21,898.71
6. Step 6: Final answer
   x = 23,885.42