Finding the Fourth Proportional to 3,923.10, 5,906.03 and 3,387.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,923.10 : 5,906.03 = 3,387.42 : x
2. Step 2: Convert to fraction form
   3,923.10/5,906.03 = 3,387.42/x
3. Step 3: Cross multiply
   3,923.10x = 5,906.03 × 3,387.42
4. Step 4: Simplify right side
   3,923.10x = 20,006,187.21
5. Step 5: Solve for x
   x = 20,006,187.21/3,923.10
6. Step 6: Final answer
   x = 5,099.59