Finding the Fourth Proportional to 12,713.68, 17,544.36 and 7,408.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,713.68 : 17,544.36 = 7,408.72 : x
2. Step 2: Convert to fraction form
   12,713.68/17,544.36 = 7,408.72/x
3. Step 3: Cross multiply
   12,713.68x = 17,544.36 × 7,408.72
4. Step 4: Simplify right side
   12,713.68x = 129,981,250.82
5. Step 5: Solve for x
   x = 129,981,250.82/12,713.68
6. Step 6: Final answer
   x = 10,223.73