Finding the Fourth Proportional to 8,056.96, 12,086.56 and 2,861.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,056.96 : 12,086.56 = 2,861.60 : x
2. Step 2: Convert to fraction form
   8,056.96/12,086.56 = 2,861.60/x
3. Step 3: Cross multiply
   8,056.96x = 12,086.56 × 2,861.60
4. Step 4: Simplify right side
   8,056.96x = 34,586,900.10
5. Step 5: Solve for x
   x = 34,586,900.10/8,056.96
6. Step 6: Final answer
   x = 4,292.80