Finding the Fourth Proportional to 3,866.58, 5,336.25 and 3,383.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,866.58 : 5,336.25 = 3,383.55 : x
2. Step 2: Convert to fraction form
   3,866.58/5,336.25 = 3,383.55/x
3. Step 3: Cross multiply
   3,866.58x = 5,336.25 × 3,383.55
4. Step 4: Simplify right side
   3,866.58x = 18,055,468.69
5. Step 5: Solve for x
   x = 18,055,468.69/3,866.58
6. Step 6: Final answer
   x = 4,669.62