Finding the Fourth Proportional to 10,906.20, 16,360.38 and 3,979.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.20 : 16,360.38 = 3,979.08 : x
2. Step 2: Convert to fraction form
   10,906.20/16,360.38 = 3,979.08/x
3. Step 3: Cross multiply
   10,906.20x = 16,360.38 × 3,979.08
4. Step 4: Simplify right side
   10,906.20x = 65,099,260.85
5. Step 5: Solve for x
   x = 65,099,260.85/10,906.20
6. Step 6: Final answer
   x = 5,969.01