Finding the Fourth Proportional to 3,926.33, 5,418.47 and 2,158.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.33 : 5,418.47 = 2,158.00 : x
2. Step 2: Convert to fraction form
   3,926.33/5,418.47 = 2,158.00/x
3. Step 3: Cross multiply
   3,926.33x = 5,418.47 × 2,158.00
4. Step 4: Simplify right side
   3,926.33x = 11,693,020.38
5. Step 5: Solve for x
   x = 11,693,020.38/3,926.33
6. Step 6: Final answer
   x = 2,978.10