Finding the Fourth Proportional to 16,398.69, 22,628.16 and 9,227.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,398.69 : 22,628.16 = 9,227.72 : x
2. Step 2: Convert to fraction form
   16,398.69/22,628.16 = 9,227.72/x
3. Step 3: Cross multiply
   16,398.69x = 22,628.16 × 9,227.72
4. Step 4: Simplify right side
   16,398.69x = 208,806,381.17
5. Step 5: Solve for x
   x = 208,806,381.17/16,398.69
6. Step 6: Final answer
   x = 12,733.12