Finding the Fourth Proportional to 8,081.56, 12,116.58 and 3,147.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,081.56 : 12,116.58 = 3,147.16 : x
2. Step 2: Convert to fraction form
   8,081.56/12,116.58 = 3,147.16/x
3. Step 3: Cross multiply
   8,081.56x = 12,116.58 × 3,147.16
4. Step 4: Simplify right side
   8,081.56x = 38,132,815.91
5. Step 5: Solve for x
   x = 38,132,815.91/8,081.56
6. Step 6: Final answer
   x = 4,718.50