Finding the Fourth Proportional to 12,695.56, 17,517.79 and 7,976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,695.56 : 17,517.79 = 7,976.50 : x
2. Step 2: Convert to fraction form
   12,695.56/17,517.79 = 7,976.50/x
3. Step 3: Cross multiply
   12,695.56x = 17,517.79 × 7,976.50
4. Step 4: Simplify right side
   12,695.56x = 139,730,651.94
5. Step 5: Solve for x
   x = 139,730,651.94/12,695.56
6. Step 6: Final answer
   x = 11,006.26