Finding the Fourth Proportional to 12,818.24, 17,687.04 and 7,512.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,818.24 : 17,687.04 = 7,512.56 : x
2. Step 2: Convert to fraction form
   12,818.24/17,687.04 = 7,512.56/x
3. Step 3: Cross multiply
   12,818.24x = 17,687.04 × 7,512.56
4. Step 4: Simplify right side
   12,818.24x = 132,874,949.22
5. Step 5: Solve for x
   x = 132,874,949.22/12,818.24
6. Step 6: Final answer
   x = 10,366.08