Finding the Fourth Proportional to 8,285.83, 12,428.78 and 3,355.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,285.83 : 12,428.78 = 3,355.56 : x
2. Step 2: Convert to fraction form
   8,285.83/12,428.78 = 3,355.56/x
3. Step 3: Cross multiply
   8,285.83x = 12,428.78 × 3,355.56
4. Step 4: Simplify right side
   8,285.83x = 41,705,500.24
5. Step 5: Solve for x
   x = 41,705,500.24/8,285.83
6. Step 6: Final answer
   x = 5,033.35