Finding the Fourth Proportional to 10,979.28, 16,470.51 and 3,581.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,979.28 : 16,470.51 = 3,581.91 : x
2. Step 2: Convert to fraction form
   10,979.28/16,470.51 = 3,581.91/x
3. Step 3: Cross multiply
   10,979.28x = 16,470.51 × 3,581.91
4. Step 4: Simplify right side
   10,979.28x = 58,995,884.47
5. Step 5: Solve for x
   x = 58,995,884.47/10,979.28
6. Step 6: Final answer
   x = 5,373.38