Finding the Fourth Proportional to 12,726.72, 17,546.78 and 10,572.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726.72 : 17,546.78 = 10,572.88 : x
2. Step 2: Convert to fraction form
   12,726.72/17,546.78 = 10,572.88/x
3. Step 3: Cross multiply
   12,726.72x = 17,546.78 × 10,572.88
4. Step 4: Simplify right side
   12,726.72x = 185,519,955.32
5. Step 5: Solve for x
   x = 185,519,955.32/12,726.72
6. Step 6: Final answer
   x = 14,577.20