Finding the Fourth Proportional to 3,879.81, 5,793.35 and 3,774.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,879.81 : 5,793.35 = 3,774.71 : x
2. Step 2: Convert to fraction form
   3,879.81/5,793.35 = 3,774.71/x
3. Step 3: Cross multiply
   3,879.81x = 5,793.35 × 3,774.71
4. Step 4: Simplify right side
   3,879.81x = 21,868,216.18
5. Step 5: Solve for x
   x = 21,868,216.18/3,879.81
6. Step 6: Final answer
   x = 5,636.41