Finding the Fourth Proportional to 3,949.43, 5,929.30 and 2,641.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.43 : 5,929.30 = 2,641.58 : x
2. Step 2: Convert to fraction form
   3,949.43/5,929.30 = 2,641.58/x
3. Step 3: Cross multiply
   3,949.43x = 5,929.30 × 2,641.58
4. Step 4: Simplify right side
   3,949.43x = 15,662,716.18
5. Step 5: Solve for x
   x = 15,662,716.18/3,949.43
6. Step 6: Final answer
   x = 3,965.82