Finding the Fourth Proportional to 8,013.27, 12,020.31 and 3,081.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,013.27 : 12,020.31 = 3,081.18 : x
2. Step 2: Convert to fraction form
   8,013.27/12,020.31 = 3,081.18/x
3. Step 3: Cross multiply
   8,013.27x = 12,020.31 × 3,081.18
4. Step 4: Simplify right side
   8,013.27x = 37,036,738.77
5. Step 5: Solve for x
   x = 37,036,738.77/8,013.27
6. Step 6: Final answer
   x = 4,621.93