Finding the Fourth Proportional to 10,673.28, 15,993.72 and 5,991.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,673.28 : 15,993.72 = 5,991.48 : x
2. Step 2: Convert to fraction form
   10,673.28/15,993.72 = 5,991.48/x
3. Step 3: Cross multiply
   10,673.28x = 15,993.72 × 5,991.48
4. Step 4: Simplify right side
   10,673.28x = 95,826,053.51
5. Step 5: Solve for x
   x = 95,826,053.51/10,673.28
6. Step 6: Final answer
   x = 8,978.13