Finding the Fourth Proportional to 12,480.30, 17,216.60 and 7,440.97

Step by Step Solution

1. Step 1: Write the proportion equation
   12,480.30 : 17,216.60 = 7,440.97 : x
2. Step 2: Convert to fraction form
   12,480.30/17,216.60 = 7,440.97/x
3. Step 3: Cross multiply
   12,480.30x = 17,216.60 × 7,440.97
4. Step 4: Simplify right side
   12,480.30x = 128,108,204.10
5. Step 5: Solve for x
   x = 128,108,204.10/12,480.30
6. Step 6: Final answer
   x = 10,264.83