Finding the Fourth Proportional to 8,168.31, 11,198.83 and 8,020.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,168.31 : 11,198.83 = 8,020.68 : x
2. Step 2: Convert to fraction form
   8,168.31/11,198.83 = 8,020.68/x
3. Step 3: Cross multiply
   8,168.31x = 11,198.83 × 8,020.68
4. Step 4: Simplify right side
   8,168.31x = 89,822,231.80
5. Step 5: Solve for x
   x = 89,822,231.80/8,168.31
6. Step 6: Final answer
   x = 10,996.43