Finding the Fourth Proportional to 8,164.89, 12,243.24 and 3,998.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,164.89 : 12,243.24 = 3,998.61 : x
2. Step 2: Convert to fraction form
   8,164.89/12,243.24 = 3,998.61/x
3. Step 3: Cross multiply
   8,164.89x = 12,243.24 × 3,998.61
4. Step 4: Simplify right side
   8,164.89x = 48,955,941.90
5. Step 5: Solve for x
   x = 48,955,941.90/8,164.89
6. Step 6: Final answer
   x = 5,995.91