Finding the Fourth Proportional to 16,288.74, 22,477.05 and 9,215.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,288.74 : 22,477.05 = 9,215.82 : x
2. Step 2: Convert to fraction form
   16,288.74/22,477.05 = 9,215.82/x
3. Step 3: Cross multiply
   16,288.74x = 22,477.05 × 9,215.82
4. Step 4: Simplify right side
   16,288.74x = 207,144,446.93
5. Step 5: Solve for x
   x = 207,144,446.93/16,288.74
6. Step 6: Final answer
   x = 12,717.03