Finding the Fourth Proportional to 3,638.49, 5,018.69 and 2,502.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638.49 : 5,018.69 = 2,502.61 : x
2. Step 2: Convert to fraction form
   3,638.49/5,018.69 = 2,502.61/x
3. Step 3: Cross multiply
   3,638.49x = 5,018.69 × 2,502.61
4. Step 4: Simplify right side
   3,638.49x = 12,559,823.78
5. Step 5: Solve for x
   x = 12,559,823.78/3,638.49
6. Step 6: Final answer
   x = 3,451.93