Finding the Fourth Proportional to 21,025.38, 31,523.49 and 9,922.71

Step by Step Solution

1. Step 1: Write the proportion equation
   21,025.38 : 31,523.49 = 9,922.71 : x
2. Step 2: Convert to fraction form
   21,025.38/31,523.49 = 9,922.71/x
3. Step 3: Cross multiply
   21,025.38x = 31,523.49 × 9,922.71
4. Step 4: Simplify right side
   21,025.38x = 312,798,449.46
5. Step 5: Solve for x
   x = 312,798,449.46/21,025.38
6. Step 6: Final answer
   x = 14,877.18