Finding the Fourth Proportional to 10,979.74, 16,471.43 and 5,433.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,979.74 : 16,471.43 = 5,433.27 : x
2. Step 2: Convert to fraction form
   10,979.74/16,471.43 = 5,433.27/x
3. Step 3: Cross multiply
   10,979.74x = 16,471.43 × 5,433.27
4. Step 4: Simplify right side
   10,979.74x = 89,493,726.48
5. Step 5: Solve for x
   x = 89,493,726.48/10,979.74
6. Step 6: Final answer
   x = 8,150.81