Finding the Fourth Proportional to 17,856.42, 24,641.17 and 9,898.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,856.42 : 24,641.17 = 9,898.75 : x
2. Step 2: Convert to fraction form
   17,856.42/24,641.17 = 9,898.75/x
3. Step 3: Cross multiply
   17,856.42x = 24,641.17 × 9,898.75
4. Step 4: Simplify right side
   17,856.42x = 243,916,781.54
5. Step 5: Solve for x
   x = 243,916,781.54/17,856.42
6. Step 6: Final answer
   x = 13,659.89