Finding the Fourth Proportional to 2,625.77, 3,939.71 and 2,584.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,625.77 : 3,939.71 = 2,584.31 : x
2. Step 2: Convert to fraction form
   2,625.77/3,939.71 = 2,584.31/x
3. Step 3: Cross multiply
   2,625.77x = 3,939.71 × 2,584.31
4. Step 4: Simplify right side
   2,625.77x = 10,181,399.33
5. Step 5: Solve for x
   x = 10,181,399.33/2,625.77
6. Step 6: Final answer
   x = 3,877.50