Finding the Fourth Proportional to 16,240.72, 22,411.74 and 9,166.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,240.72 : 22,411.74 = 9,166.72 : x
2. Step 2: Convert to fraction form
   16,240.72/22,411.74 = 9,166.72/x
3. Step 3: Cross multiply
   16,240.72x = 22,411.74 × 9,166.72
4. Step 4: Simplify right side
   16,240.72x = 205,442,145.29
5. Step 5: Solve for x
   x = 205,442,145.29/16,240.72
6. Step 6: Final answer
   x = 12,649.82