Finding the Fourth Proportional to 16,315.91, 22,516.85 and 9,243.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,315.91 : 22,516.85 = 9,243.71 : x
2. Step 2: Convert to fraction form
   16,315.91/22,516.85 = 9,243.71/x
3. Step 3: Cross multiply
   16,315.91x = 22,516.85 × 9,243.71
4. Step 4: Simplify right side
   16,315.91x = 208,139,185.29
5. Step 5: Solve for x
   x = 208,139,185.29/16,315.91
6. Step 6: Final answer
   x = 12,756.82