Finding the Fourth Proportional to 17,898.72, 24,697.98 and 9,939.86

Step by Step Solution

1. Step 1: Write the proportion equation
   17,898.72 : 24,697.98 = 9,939.86 : x
2. Step 2: Convert to fraction form
   17,898.72/24,697.98 = 9,939.86/x
3. Step 3: Cross multiply
   17,898.72x = 24,697.98 × 9,939.86
4. Step 4: Simplify right side
   17,898.72x = 245,494,463.48
5. Step 5: Solve for x
   x = 245,494,463.48/17,898.72
6. Step 6: Final answer
   x = 13,715.76