Finding the Fourth Proportional to 8,057.62, 12,086.27 and 3,312.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,057.62 : 12,086.27 = 3,312.74 : x
2. Step 2: Convert to fraction form
   8,057.62/12,086.27 = 3,312.74/x
3. Step 3: Cross multiply
   8,057.62x = 12,086.27 × 3,312.74
4. Step 4: Simplify right side
   8,057.62x = 40,038,708.58
5. Step 5: Solve for x
   x = 40,038,708.58/8,057.62
6. Step 6: Final answer
   x = 4,969.05