Finding the Fourth Proportional to 10,979.24, 16,448.22 and 5,426.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,979.24 : 16,448.22 = 5,426.12 : x
2. Step 2: Convert to fraction form
   10,979.24/16,448.22 = 5,426.12/x
3. Step 3: Cross multiply
   10,979.24x = 16,448.22 × 5,426.12
4. Step 4: Simplify right side
   10,979.24x = 89,250,015.51
5. Step 5: Solve for x
   x = 89,250,015.51/10,979.24
6. Step 6: Final answer
   x = 8,128.98