Finding the Fourth Proportional to 9,081.81, 12,541.10 and 5,730.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,081.81 : 12,541.10 = 5,730.57 : x
2. Step 2: Convert to fraction form
   9,081.81/12,541.10 = 5,730.57/x
3. Step 3: Cross multiply
   9,081.81x = 12,541.10 × 5,730.57
4. Step 4: Simplify right side
   9,081.81x = 71,867,622.77
5. Step 5: Solve for x
   x = 71,867,622.77/9,081.81
6. Step 6: Final answer
   x = 7,913.36