Finding the Fourth Proportional to 8,550.73, 12,814.50 and 3,280.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,550.73 : 12,814.50 = 3,280.87 : x
2. Step 2: Convert to fraction form
   8,550.73/12,814.50 = 3,280.87/x
3. Step 3: Cross multiply
   8,550.73x = 12,814.50 × 3,280.87
4. Step 4: Simplify right side
   8,550.73x = 42,042,736.94
5. Step 5: Solve for x
   x = 42,042,736.94/8,550.73
6. Step 6: Final answer
   x = 4,916.86