Finding the Fourth Proportional to 8,111.31, 11,184.27 and 5,989.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.31 : 11,184.27 = 5,989.92 : x
2. Step 2: Convert to fraction form
   8,111.31/11,184.27 = 5,989.92/x
3. Step 3: Cross multiply
   8,111.31x = 11,184.27 × 5,989.92
4. Step 4: Simplify right side
   8,111.31x = 66,992,882.56
5. Step 5: Solve for x
   x = 66,992,882.56/8,111.31
6. Step 6: Final answer
   x = 8,259.19