Finding the Fourth Proportional to 3,855.02, 5,317.98 and 2,596.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855.02 : 5,317.98 = 2,596.40 : x
2. Step 2: Convert to fraction form
   3,855.02/5,317.98 = 2,596.40/x
3. Step 3: Cross multiply
   3,855.02x = 5,317.98 × 2,596.40
4. Step 4: Simplify right side
   3,855.02x = 13,807,603.27
5. Step 5: Solve for x
   x = 13,807,603.27/3,855.02
6. Step 6: Final answer
   x = 3,581.72