Finding the Fourth Proportional to 17,814.78, 24,585.12 and 9,856.87

Step by Step Solution

1. Step 1: Write the proportion equation
   17,814.78 : 24,585.12 = 9,856.87 : x
2. Step 2: Convert to fraction form
   17,814.78/24,585.12 = 9,856.87/x
3. Step 3: Cross multiply
   17,814.78x = 24,585.12 × 9,856.87
4. Step 4: Simplify right side
   17,814.78x = 242,332,270.31
5. Step 5: Solve for x
   x = 242,332,270.31/17,814.78
6. Step 6: Final answer
   x = 13,602.88