Finding the Fourth Proportional to 12,234.52, 18,342.79 and 3,909.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,234.52 : 18,342.79 = 3,909.73 : x
2. Step 2: Convert to fraction form
   12,234.52/18,342.79 = 3,909.73/x
3. Step 3: Cross multiply
   12,234.52x = 18,342.79 × 3,909.73
4. Step 4: Simplify right side
   12,234.52x = 71,715,377.40
5. Step 5: Solve for x
   x = 71,715,377.40/12,234.52
6. Step 6: Final answer
   x = 5,861.72