Finding the Fourth Proportional to 16,145.76, 22,282.14 and 9,072.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,145.76 : 22,282.14 = 9,072.18 : x
2. Step 2: Convert to fraction form
   16,145.76/22,282.14 = 9,072.18/x
3. Step 3: Cross multiply
   16,145.76x = 22,282.14 × 9,072.18
4. Step 4: Simplify right side
   16,145.76x = 202,147,584.87
5. Step 5: Solve for x
   x = 202,147,584.87/16,145.76
6. Step 6: Final answer
   x = 12,520.17