Finding the Fourth Proportional to 12,726.59, 17,562.69 and 7,137.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726.59 : 17,562.69 = 7,137.59 : x
2. Step 2: Convert to fraction form
   12,726.59/17,562.69 = 7,137.59/x
3. Step 3: Cross multiply
   12,726.59x = 17,562.69 × 7,137.59
4. Step 4: Simplify right side
   12,726.59x = 125,355,192.70
5. Step 5: Solve for x
   x = 125,355,192.70/12,726.59
6. Step 6: Final answer
   x = 9,849.87