Finding the Fourth Proportional to 12,380.43, 17,087.17 and 7,347.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,380.43 : 17,087.17 = 7,347.42 : x
2. Step 2: Convert to fraction form
   12,380.43/17,087.17 = 7,347.42/x
3. Step 3: Cross multiply
   12,380.43x = 17,087.17 × 7,347.42
4. Step 4: Simplify right side
   12,380.43x = 125,546,614.60
5. Step 5: Solve for x
   x = 125,546,614.60/12,380.43
6. Step 6: Final answer
   x = 10,140.74