Finding the Fourth Proportional to 9,081.10, 12,726.50 and 9,081.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,081.10 : 12,726.50 = 9,081.10 : x
2. Step 2: Convert to fraction form
   9,081.10/12,726.50 = 9,081.10/x
3. Step 3: Cross multiply
   9,081.10x = 12,726.50 × 9,081.10
4. Step 4: Simplify right side
   9,081.10x = 115,570,619.15
5. Step 5: Solve for x
   x = 115,570,619.15/9,081.10
6. Step 6: Final answer
   x = 12,726.50