Finding the Fourth Proportional to 3,910.83, 5,396.42 and 2,399.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.83 : 5,396.42 = 2,399.06 : x
2. Step 2: Convert to fraction form
   3,910.83/5,396.42 = 2,399.06/x
3. Step 3: Cross multiply
   3,910.83x = 5,396.42 × 2,399.06
4. Step 4: Simplify right side
   3,910.83x = 12,946,296.39
5. Step 5: Solve for x
   x = 12,946,296.39/3,910.83
6. Step 6: Final answer
   x = 3,310.37