Finding the Fourth Proportional to 12,795.57, 17,658.77 and 7,759.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,795.57 : 17,658.77 = 7,759.98 : x
2. Step 2: Convert to fraction form
   12,795.57/17,658.77 = 7,759.98/x
3. Step 3: Cross multiply
   12,795.57x = 17,658.77 × 7,759.98
4. Step 4: Simplify right side
   12,795.57x = 137,031,663.22
5. Step 5: Solve for x
   x = 137,031,663.22/12,795.57
6. Step 6: Final answer
   x = 10,709.31