Finding the Fourth Proportional to 16,440.65, 22,686.72 and 9,270.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,440.65 : 22,686.72 = 9,270.16 : x
2. Step 2: Convert to fraction form
   16,440.65/22,686.72 = 9,270.16/x
3. Step 3: Cross multiply
   16,440.65x = 22,686.72 × 9,270.16
4. Step 4: Simplify right side
   16,440.65x = 210,309,547.45
5. Step 5: Solve for x
   x = 210,309,547.45/16,440.65
6. Step 6: Final answer
   x = 12,792.04