Finding the Fourth Proportional to 17,478.65, 24,120.81 and 9,520.86

Step by Step Solution

1. Step 1: Write the proportion equation
   17,478.65 : 24,120.81 = 9,520.86 : x
2. Step 2: Convert to fraction form
   17,478.65/24,120.81 = 9,520.86/x
3. Step 3: Cross multiply
   17,478.65x = 24,120.81 × 9,520.86
4. Step 4: Simplify right side
   17,478.65x = 229,650,855.10
5. Step 5: Solve for x
   x = 229,650,855.10/17,478.65
6. Step 6: Final answer
   x = 13,138.94