Finding the Fourth Proportional to 12,665.28, 17,477.76 and 7,361.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.28 : 17,477.76 = 7,361.04 : x
2. Step 2: Convert to fraction form
   12,665.28/17,477.76 = 7,361.04/x
3. Step 3: Cross multiply
   12,665.28x = 17,477.76 × 7,361.04
4. Step 4: Simplify right side
   12,665.28x = 128,654,490.47
5. Step 5: Solve for x
   x = 128,654,490.47/12,665.28
6. Step 6: Final answer
   x = 10,158.05