Finding the Fourth Proportional to 17,856.54, 24,641.60 and 9,898.70

Step by Step Solution

1. Step 1: Write the proportion equation
   17,856.54 : 24,641.60 = 9,898.70 : x
2. Step 2: Convert to fraction form
   17,856.54/24,641.60 = 9,898.70/x
3. Step 3: Cross multiply
   17,856.54x = 24,641.60 × 9,898.70
4. Step 4: Simplify right side
   17,856.54x = 243,919,633.22
5. Step 5: Solve for x
   x = 243,919,633.22/17,856.54
6. Step 6: Final answer
   x = 13,659.96