Finding the Fourth Proportional to 3,949.98, 5,446.89 and 3,392.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.98 : 5,446.89 = 3,392.30 : x
2. Step 2: Convert to fraction form
   3,949.98/5,446.89 = 3,392.30/x
3. Step 3: Cross multiply
   3,949.98x = 5,446.89 × 3,392.30
4. Step 4: Simplify right side
   3,949.98x = 18,477,484.95
5. Step 5: Solve for x
   x = 18,477,484.95/3,949.98
6. Step 6: Final answer
   x = 4,677.87