Finding the Fourth Proportional to 8,077.83, 11,139.88 and 5,242.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,077.83 : 11,139.88 = 5,242.17 : x
2. Step 2: Convert to fraction form
   8,077.83/11,139.88 = 5,242.17/x
3. Step 3: Cross multiply
   8,077.83x = 11,139.88 × 5,242.17
4. Step 4: Simplify right side
   8,077.83x = 58,397,120.58
5. Step 5: Solve for x
   x = 58,397,120.58/8,077.83
6. Step 6: Final answer
   x = 7,229.31