Finding the Fourth Proportional to 17,818.55, 24,589.98 and 9,861.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,818.55 : 24,589.98 = 9,861.31 : x
2. Step 2: Convert to fraction form
   17,818.55/24,589.98 = 9,861.31/x
3. Step 3: Cross multiply
   17,818.55x = 24,589.98 × 9,861.31
4. Step 4: Simplify right side
   17,818.55x = 242,489,446.41
5. Step 5: Solve for x
   x = 242,489,446.41/17,818.55
6. Step 6: Final answer
   x = 13,608.82