Finding the Fourth Proportional to 13,081.56, 18,040.56 and 9,732.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.56 : 18,040.56 = 9,732.72 : x
2. Step 2: Convert to fraction form
   13,081.56/18,040.56 = 9,732.72/x
3. Step 3: Cross multiply
   13,081.56x = 18,040.56 × 9,732.72
4. Step 4: Simplify right side
   13,081.56x = 175,583,719.12
5. Step 5: Solve for x
   x = 175,583,719.12/13,081.56
6. Step 6: Final answer
   x = 13,422.23