Finding the Fourth Proportional to 21,151.83, 31,732.20 and 8,003.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,151.83 : 31,732.20 = 8,003.91 : x
2. Step 2: Convert to fraction form
   21,151.83/31,732.20 = 8,003.91/x
3. Step 3: Cross multiply
   21,151.83x = 31,732.20 × 8,003.91
4. Step 4: Simplify right side
   21,151.83x = 253,981,672.90
5. Step 5: Solve for x
   x = 253,981,672.90/21,151.83
6. Step 6: Final answer
   x = 12,007.55