Finding the Fourth Proportional to 16,215.31, 24,308.34 and 8,400.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,215.31 : 24,308.34 = 8,400.43 : x
2. Step 2: Convert to fraction form
   16,215.31/24,308.34 = 8,400.43/x
3. Step 3: Cross multiply
   16,215.31x = 24,308.34 × 8,400.43
4. Step 4: Simplify right side
   16,215.31x = 204,200,508.59
5. Step 5: Solve for x
   x = 204,200,508.59/16,215.31
6. Step 6: Final answer
   x = 12,593.07