Finding the Fourth Proportional to 3,926.58, 5,418.59 and 2,158.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.58 : 5,418.59 = 2,158.14 : x
2. Step 2: Convert to fraction form
   3,926.58/5,418.59 = 2,158.14/x
3. Step 3: Cross multiply
   3,926.58x = 5,418.59 × 2,158.14
4. Step 4: Simplify right side
   3,926.58x = 11,694,065.03
5. Step 5: Solve for x
   x = 11,694,065.03/3,926.58
6. Step 6: Final answer
   x = 2,978.18