Finding the Fourth Proportional to 3,635.78, 5,016.77 and 2,143.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,635.78 : 5,016.77 = 2,143.49 : x
2. Step 2: Convert to fraction form
   3,635.78/5,016.77 = 2,143.49/x
3. Step 3: Cross multiply
   3,635.78x = 5,016.77 × 2,143.49
4. Step 4: Simplify right side
   3,635.78x = 10,753,360.53
5. Step 5: Solve for x
   x = 10,753,360.53/3,635.78
6. Step 6: Final answer
   x = 2,957.65