Finding the Fourth Proportional to 7,105.86, 9,806.52 and 3,919.14

Step by Step Solution

1. Step 1: Write the proportion equation
   7,105.86 : 9,806.52 = 3,919.14 : x
2. Step 2: Convert to fraction form
   7,105.86/9,806.52 = 3,919.14/x
3. Step 3: Cross multiply
   7,105.86x = 9,806.52 × 3,919.14
4. Step 4: Simplify right side
   7,105.86x = 38,433,124.79
5. Step 5: Solve for x
   x = 38,433,124.79/7,105.86
6. Step 6: Final answer
   x = 5,408.65