Finding the Fourth Proportional to 12,757.15, 17,613.46 and 11,408.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.15 : 17,613.46 = 11,408.58 : x
2. Step 2: Convert to fraction form
   12,757.15/17,613.46 = 11,408.58/x
3. Step 3: Cross multiply
   12,757.15x = 17,613.46 × 11,408.58
4. Step 4: Simplify right side
   12,757.15x = 200,944,613.83
5. Step 5: Solve for x
   x = 200,944,613.83/12,757.15
6. Step 6: Final answer
   x = 15,751.52