Finding the Fourth Proportional to 5,155.10, 7,727.18 and 3,919.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,155.10 : 7,727.18 = 3,919.46 : x
2. Step 2: Convert to fraction form
   5,155.10/7,727.18 = 3,919.46/x
3. Step 3: Cross multiply
   5,155.10x = 7,727.18 × 3,919.46
4. Step 4: Simplify right side
   5,155.10x = 30,286,372.92
5. Step 5: Solve for x
   x = 30,286,372.92/5,155.10
6. Step 6: Final answer
   x = 5,875.03