Finding the Fourth Proportional to 3,926.88, 5,418.72 and 2,354.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.88 : 5,418.72 = 2,354.88 : x
2. Step 2: Convert to fraction form
   3,926.88/5,418.72 = 2,354.88/x
3. Step 3: Cross multiply
   3,926.88x = 5,418.72 × 2,354.88
4. Step 4: Simplify right side
   3,926.88x = 12,760,435.35
5. Step 5: Solve for x
   x = 12,760,435.35/3,926.88
6. Step 6: Final answer
   x = 3,249.51