Finding the Fourth Proportional to 3,953.74, 5,934.20 and 2,106.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953.74 : 5,934.20 = 2,106.43 : x
2. Step 2: Convert to fraction form
   3,953.74/5,934.20 = 2,106.43/x
3. Step 3: Cross multiply
   3,953.74x = 5,934.20 × 2,106.43
4. Step 4: Simplify right side
   3,953.74x = 12,499,976.91
5. Step 5: Solve for x
   x = 12,499,976.91/3,953.74
6. Step 6: Final answer
   x = 3,161.56