Finding the Fourth Proportional to 9,081.06, 12,540.06 and 5,729.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,081.06 : 12,540.06 = 5,729.82 : x
2. Step 2: Convert to fraction form
   9,081.06/12,540.06 = 5,729.82/x
3. Step 3: Cross multiply
   9,081.06x = 12,540.06 × 5,729.82
4. Step 4: Simplify right side
   9,081.06x = 71,852,286.59
5. Step 5: Solve for x
   x = 71,852,286.59/9,081.06
6. Step 6: Final answer
   x = 7,912.32