Finding the Fourth Proportional to 16,213.09, 22,372.72 and 9,141.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,213.09 : 22,372.72 = 9,141.25 : x
2. Step 2: Convert to fraction form
   16,213.09/22,372.72 = 9,141.25/x
3. Step 3: Cross multiply
   16,213.09x = 22,372.72 × 9,141.25
4. Step 4: Simplify right side
   16,213.09x = 204,514,626.70
5. Step 5: Solve for x
   x = 204,514,626.70/16,213.09
6. Step 6: Final answer
   x = 12,614.17