Finding the Fourth Proportional to 21,993.28, 32,989.98 and 5,353.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,993.28 : 32,989.98 = 5,353.31 : x
2. Step 2: Convert to fraction form
   21,993.28/32,989.98 = 5,353.31/x
3. Step 3: Cross multiply
   21,993.28x = 32,989.98 × 5,353.31
4. Step 4: Simplify right side
   21,993.28x = 176,605,589.83
5. Step 5: Solve for x
   x = 176,605,589.83/21,993.28
6. Step 6: Final answer
   x = 8,029.98