Finding the Fourth Proportional to 8,180.72, 11,291.56 and 5,039.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,180.72 : 11,291.56 = 5,039.54 : x
2. Step 2: Convert to fraction form
   8,180.72/11,291.56 = 5,039.54/x
3. Step 3: Cross multiply
   8,180.72x = 11,291.56 × 5,039.54
4. Step 4: Simplify right side
   8,180.72x = 56,904,268.28
5. Step 5: Solve for x
   x = 56,904,268.28/8,180.72
6. Step 6: Final answer
   x = 6,955.90