Finding the Fourth Proportional to 21,085.14, 31,632.90 and 14,857.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,085.14 : 31,632.90 = 14,857.31 : x
2. Step 2: Convert to fraction form
   21,085.14/31,632.90 = 14,857.31/x
3. Step 3: Cross multiply
   21,085.14x = 31,632.90 × 14,857.31
4. Step 4: Simplify right side
   21,085.14x = 469,979,917.72
5. Step 5: Solve for x
   x = 469,979,917.72/21,085.14
6. Step 6: Final answer
   x = 22,289.62