Finding the Fourth Proportional to 3,596.78, 4,963.61 and 2,105.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,596.78 : 4,963.61 = 2,105.57 : x
2. Step 2: Convert to fraction form
   3,596.78/4,963.61 = 2,105.57/x
3. Step 3: Cross multiply
   3,596.78x = 4,963.61 × 2,105.57
4. Step 4: Simplify right side
   3,596.78x = 10,451,217.78
5. Step 5: Solve for x
   x = 10,451,217.78/3,596.78
6. Step 6: Final answer
   x = 2,905.72