Finding the Fourth Proportional to 16,434.71, 22,674.35 and 9,356.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,434.71 : 22,674.35 = 9,356.12 : x
2. Step 2: Convert to fraction form
   16,434.71/22,674.35 = 9,356.12/x
3. Step 3: Cross multiply
   16,434.71x = 22,674.35 × 9,356.12
4. Step 4: Simplify right side
   16,434.71x = 212,143,849.54
5. Step 5: Solve for x
   x = 212,143,849.54/16,434.71
6. Step 6: Final answer
   x = 12,908.28