Finding the Fourth Proportional to 2,550.29, 3,521.37 and 2,215.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.29 : 3,521.37 = 2,215.35 : x
2. Step 2: Convert to fraction form
   2,550.29/3,521.37 = 2,215.35/x
3. Step 3: Cross multiply
   2,550.29x = 3,521.37 × 2,215.35
4. Step 4: Simplify right side
   2,550.29x = 7,801,075.34
5. Step 5: Solve for x
   x = 7,801,075.34/2,550.29
6. Step 6: Final answer
   x = 3,058.90