Finding the Fourth Proportional to 12,416.20, 17,132.46 and 7,380.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,416.20 : 17,132.46 = 7,380.31 : x
2. Step 2: Convert to fraction form
   12,416.20/17,132.46 = 7,380.31/x
3. Step 3: Cross multiply
   12,416.20x = 17,132.46 × 7,380.31
4. Step 4: Simplify right side
   12,416.20x = 126,442,865.86
5. Step 5: Solve for x
   x = 126,442,865.86/12,416.20
6. Step 6: Final answer
   x = 10,183.70