Finding the Fourth Proportional to 3,396.78, 5,061.82 and 3,285.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,396.78 : 5,061.82 = 3,285.30 : x
2. Step 2: Convert to fraction form
   3,396.78/5,061.82 = 3,285.30/x
3. Step 3: Cross multiply
   3,396.78x = 5,061.82 × 3,285.30
4. Step 4: Simplify right side
   3,396.78x = 16,629,597.25
5. Step 5: Solve for x
   x = 16,629,597.25/3,396.78
6. Step 6: Final answer
   x = 4,895.69