Finding the Fourth Proportional to 16,488.29, 22,754.95 and 9,315.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,488.29 : 22,754.95 = 9,315.72 : x
2. Step 2: Convert to fraction form
   16,488.29/22,754.95 = 9,315.72/x
3. Step 3: Cross multiply
   16,488.29x = 22,754.95 × 9,315.72
4. Step 4: Simplify right side
   16,488.29x = 211,978,629.04
5. Step 5: Solve for x
   x = 211,978,629.04/16,488.29
6. Step 6: Final answer
   x = 12,856.32