Finding the Fourth Proportional to 13,380.29, 18,465.31 and 7,411.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,380.29 : 18,465.31 = 7,411.83 : x
2. Step 2: Convert to fraction form
   13,380.29/18,465.31 = 7,411.83/x
3. Step 3: Cross multiply
   13,380.29x = 18,465.31 × 7,411.83
4. Step 4: Simplify right side
   13,380.29x = 136,861,738.62
5. Step 5: Solve for x
   x = 136,861,738.62/13,380.29
6. Step 6: Final answer
   x = 10,228.61