Finding the Fourth Proportional to 8,728.96, 12,040.41 and 5,743.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,728.96 : 12,040.41 = 5,743.72 : x
2. Step 2: Convert to fraction form
   8,728.96/12,040.41 = 5,743.72/x
3. Step 3: Cross multiply
   8,728.96x = 12,040.41 × 5,743.72
4. Step 4: Simplify right side
   8,728.96x = 69,156,743.73
5. Step 5: Solve for x
   x = 69,156,743.73/8,728.96
6. Step 6: Final answer
   x = 7,922.68