Finding the Fourth Proportional to 8,112.91, 12,171.39 and 2,269.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,112.91 : 12,171.39 = 2,269.48 : x
2. Step 2: Convert to fraction form
   8,112.91/12,171.39 = 2,269.48/x
3. Step 3: Cross multiply
   8,112.91x = 12,171.39 × 2,269.48
4. Step 4: Simplify right side
   8,112.91x = 27,622,665.32
5. Step 5: Solve for x
   x = 27,622,665.32/8,112.91
6. Step 6: Final answer
   x = 3,404.78