Finding the Fourth Proportional to 8,081.64, 12,118.56 and 2,816.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,081.64 : 12,118.56 = 2,816.54 : x
2. Step 2: Convert to fraction form
   8,081.64/12,118.56 = 2,816.54/x
3. Step 3: Cross multiply
   8,081.64x = 12,118.56 × 2,816.54
4. Step 4: Simplify right side
   8,081.64x = 34,132,348.39
5. Step 5: Solve for x
   x = 34,132,348.39/8,081.64
6. Step 6: Final answer
   x = 4,223.44