Finding the Fourth Proportional to 12,718.35, 17,542.53 and 8,949.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,718.35 : 17,542.53 = 8,949.42 : x
2. Step 2: Convert to fraction form
   12,718.35/17,542.53 = 8,949.42/x
3. Step 3: Cross multiply
   12,718.35x = 17,542.53 × 8,949.42
4. Step 4: Simplify right side
   12,718.35x = 156,995,468.83
5. Step 5: Solve for x
   x = 156,995,468.83/12,718.35
6. Step 6: Final answer
   x = 12,344.01