Finding the Fourth Proportional to 17,478.73, 24,120.53 and 9,520.96

Step by Step Solution

1. Step 1: Write the proportion equation
   17,478.73 : 24,120.53 = 9,520.96 : x
2. Step 2: Convert to fraction form
   17,478.73/24,120.53 = 9,520.96/x
3. Step 3: Cross multiply
   17,478.73x = 24,120.53 × 9,520.96
4. Step 4: Simplify right side
   17,478.73x = 229,650,516.76
5. Step 5: Solve for x
   x = 229,650,516.76/17,478.73
6. Step 6: Final answer
   x = 13,138.85