Finding the Fourth Proportional to 8,627.82, 12,944.46 and 3,081.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,627.82 : 12,944.46 = 3,081.05 : x
2. Step 2: Convert to fraction form
   8,627.82/12,944.46 = 3,081.05/x
3. Step 3: Cross multiply
   8,627.82x = 12,944.46 × 3,081.05
4. Step 4: Simplify right side
   8,627.82x = 39,882,528.48
5. Step 5: Solve for x
   x = 39,882,528.48/8,627.82
6. Step 6: Final answer
   x = 4,622.55