Finding the Fourth Proportional to 2,670.09, 3,985.85 and 2,550.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,670.09 : 3,985.85 = 2,550.27 : x
2. Step 2: Convert to fraction form
   2,670.09/3,985.85 = 2,550.27/x
3. Step 3: Cross multiply
   2,670.09x = 3,985.85 × 2,550.27
4. Step 4: Simplify right side
   2,670.09x = 10,164,993.68
5. Step 5: Solve for x
   x = 10,164,993.68/2,670.09
6. Step 6: Final answer
   x = 3,806.99