Finding the Fourth Proportional to 12,879.50, 17,771.67 and 7,502.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,879.50 : 17,771.67 = 7,502.82 : x
2. Step 2: Convert to fraction form
   12,879.50/17,771.67 = 7,502.82/x
3. Step 3: Cross multiply
   12,879.50x = 17,771.67 × 7,502.82
4. Step 4: Simplify right side
   12,879.50x = 133,337,641.11
5. Step 5: Solve for x
   x = 133,337,641.11/12,879.50
6. Step 6: Final answer
   x = 10,352.70