Finding the Fourth Proportional to 12,439.76, 17,167.32 and 7,061.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,439.76 : 17,167.32 = 7,061.92 : x
2. Step 2: Convert to fraction form
   12,439.76/17,167.32 = 7,061.92/x
3. Step 3: Cross multiply
   12,439.76x = 17,167.32 × 7,061.92
4. Step 4: Simplify right side
   12,439.76x = 121,234,240.45
5. Step 5: Solve for x
   x = 121,234,240.45/12,439.76
6. Step 6: Final answer
   x = 9,745.71