Finding the Fourth Proportional to 14,432.71, 19,909.98 and 9,399.85

Step by Step Solution

1. Step 1: Write the proportion equation
   14,432.71 : 19,909.98 = 9,399.85 : x
2. Step 2: Convert to fraction form
   14,432.71/19,909.98 = 9,399.85/x
3. Step 3: Cross multiply
   14,432.71x = 19,909.98 × 9,399.85
4. Step 4: Simplify right side
   14,432.71x = 187,150,825.50
5. Step 5: Solve for x
   x = 187,150,825.50/14,432.71
6. Step 6: Final answer
   x = 12,967.13