Finding the Fourth Proportional to 3,926.52, 5,418.71 and 2,158.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.52 : 5,418.71 = 2,158.24 : x
2. Step 2: Convert to fraction form
   3,926.52/5,418.71 = 2,158.24/x
3. Step 3: Cross multiply
   3,926.52x = 5,418.71 × 2,158.24
4. Step 4: Simplify right side
   3,926.52x = 11,694,852.33
5. Step 5: Solve for x
   x = 11,694,852.33/3,926.52
6. Step 6: Final answer
   x = 2,978.43