Finding the Fourth Proportional to 8,440.57, 11,643.42 and 5,081.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,440.57 : 11,643.42 = 5,081.38 : x
2. Step 2: Convert to fraction form
   8,440.57/11,643.42 = 5,081.38/x
3. Step 3: Cross multiply
   8,440.57x = 11,643.42 × 5,081.38
4. Step 4: Simplify right side
   8,440.57x = 59,164,641.52
5. Step 5: Solve for x
   x = 59,164,641.52/8,440.57
6. Step 6: Final answer
   x = 7,009.56