Finding the Fourth Proportional to 12,726.49, 17,558.01 and 7,944.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726.49 : 17,558.01 = 7,944.61 : x
2. Step 2: Convert to fraction form
   12,726.49/17,558.01 = 7,944.61/x
3. Step 3: Cross multiply
   12,726.49x = 17,558.01 × 7,944.61
4. Step 4: Simplify right side
   12,726.49x = 139,491,620.07
5. Step 5: Solve for x
   x = 139,491,620.07/12,726.49
6. Step 6: Final answer
   x = 10,960.73