Finding the Fourth Proportional to 8,056.31, 12,080.62 and 3,311.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,056.31 : 12,080.62 = 3,311.72 : x
2. Step 2: Convert to fraction form
   8,056.31/12,080.62 = 3,311.72/x
3. Step 3: Cross multiply
   8,056.31x = 12,080.62 × 3,311.72
4. Step 4: Simplify right side
   8,056.31x = 40,007,630.87
5. Step 5: Solve for x
   x = 40,007,630.87/8,056.31
6. Step 6: Final answer
   x = 4,966.00