Finding the Fourth Proportional to 12,757.26, 17,604.72 and 7,379.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.26 : 17,604.72 = 7,379.30 : x
2. Step 2: Convert to fraction form
   12,757.26/17,604.72 = 7,379.30/x
3. Step 3: Cross multiply
   12,757.26x = 17,604.72 × 7,379.30
4. Step 4: Simplify right side
   12,757.26x = 129,910,510.30
5. Step 5: Solve for x
   x = 129,910,510.30/12,757.26
6. Step 6: Final answer
   x = 10,183.26