Finding the Fourth Proportional to 4,086.78, 6,089.58 and 3,888.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.78 : 6,089.58 = 3,888.42 : x
2. Step 2: Convert to fraction form
   4,086.78/6,089.58 = 3,888.42/x
3. Step 3: Cross multiply
   4,086.78x = 6,089.58 × 3,888.42
4. Step 4: Simplify right side
   4,086.78x = 23,678,844.66
5. Step 5: Solve for x
   x = 23,678,844.66/4,086.78
6. Step 6: Final answer
   x = 5,794.01