Finding the Fourth Proportional to 2,628.30, 3,935.61 and 2,550.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.30 : 3,935.61 = 2,550.39 : x
2. Step 2: Convert to fraction form
   2,628.30/3,935.61 = 2,550.39/x
3. Step 3: Cross multiply
   2,628.30x = 3,935.61 × 2,550.39
4. Step 4: Simplify right side
   2,628.30x = 10,037,332.80
5. Step 5: Solve for x
   x = 10,037,332.80/2,628.30
6. Step 6: Final answer
   x = 3,818.95