Finding the Fourth Proportional to 12,757.36, 17,604.84 and 7,168.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.36 : 17,604.84 = 7,168.72 : x
2. Step 2: Convert to fraction form
   12,757.36/17,604.84 = 7,168.72/x
3. Step 3: Cross multiply
   12,757.36x = 17,604.84 × 7,168.72
4. Step 4: Simplify right side
   12,757.36x = 126,204,168.60
5. Step 5: Solve for x
   x = 126,204,168.60/12,757.36
6. Step 6: Final answer
   x = 9,892.66