Finding the Fourth Proportional to 17,854.62, 24,640.85 and 9,899.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,854.62 : 24,640.85 = 9,899.34 : x
2. Step 2: Convert to fraction form
   17,854.62/24,640.85 = 9,899.34/x
3. Step 3: Cross multiply
   17,854.62x = 24,640.85 × 9,899.34
4. Step 4: Simplify right side
   17,854.62x = 243,928,152.04
5. Step 5: Solve for x
   x = 243,928,152.04/17,854.62
6. Step 6: Final answer
   x = 13,661.91