Finding the Fourth Proportional to 3,951.70, 5,923.30 and 2,100.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,951.70 : 5,923.30 = 2,100.96 : x
2. Step 2: Convert to fraction form
   3,951.70/5,923.30 = 2,100.96/x
3. Step 3: Cross multiply
   3,951.70x = 5,923.30 × 2,100.96
4. Step 4: Simplify right side
   3,951.70x = 12,444,616.37
5. Step 5: Solve for x
   x = 12,444,616.37/3,951.70
6. Step 6: Final answer
   x = 3,149.18