Finding the Fourth Proportional to 12,872.91, 17,762.31 and 7,568.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,872.91 : 17,762.31 = 7,568.79 : x
2. Step 2: Convert to fraction form
   12,872.91/17,762.31 = 7,568.79/x
3. Step 3: Cross multiply
   12,872.91x = 17,762.31 × 7,568.79
4. Step 4: Simplify right side
   12,872.91x = 134,439,194.30
5. Step 5: Solve for x
   x = 134,439,194.30/12,872.91
6. Step 6: Final answer
   x = 10,443.57