Finding the Fourth Proportional to 3,418.83, 5,101.42 and 3,209.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,418.83 : 5,101.42 = 3,209.85 : x
2. Step 2: Convert to fraction form
   3,418.83/5,101.42 = 3,209.85/x
3. Step 3: Cross multiply
   3,418.83x = 5,101.42 × 3,209.85
4. Step 4: Simplify right side
   3,418.83x = 16,374,789.69
5. Step 5: Solve for x
   x = 16,374,789.69/3,418.83
6. Step 6: Final answer
   x = 4,789.59