Finding the Fourth Proportional to 21,399.31, 32,104.23 and 8,252.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,399.31 : 32,104.23 = 8,252.61 : x
2. Step 2: Convert to fraction form
   21,399.31/32,104.23 = 8,252.61/x
3. Step 3: Cross multiply
   21,399.31x = 32,104.23 × 8,252.61
4. Step 4: Simplify right side
   21,399.31x = 264,943,689.54
5. Step 5: Solve for x
   x = 264,943,689.54/21,399.31
6. Step 6: Final answer
   x = 12,380.95