Finding the Fourth Proportional to 16,315.89, 22,510.56 and 9,144.75

Step by Step Solution

1. Step 1: Write the proportion equation
   16,315.89 : 22,510.56 = 9,144.75 : x
2. Step 2: Convert to fraction form
   16,315.89/22,510.56 = 9,144.75/x
3. Step 3: Cross multiply
   16,315.89x = 22,510.56 × 9,144.75
4. Step 4: Simplify right side
   16,315.89x = 205,853,443.56
5. Step 5: Solve for x
   x = 205,853,443.56/16,315.89
6. Step 6: Final answer
   x = 12,616.75