Finding the Fourth Proportional to 12,387, 17,096.22 and 7,419

Step by Step Solution

1. Step 1: Write the proportion equation
   12,387 : 17,096.22 = 7,419 : x
2. Step 2: Convert to fraction form
   12,387/17,096.22 = 7,419/x
3. Step 3: Cross multiply
   12,387x = 17,096.22 × 7,419
4. Step 4: Simplify right side
   12,387x = 126,836,856.18
5. Step 5: Solve for x
   x = 126,836,856.18/12,387
6. Step 6: Final answer
   x = 10,239.51