Finding the Fourth Proportional to 16,216.39, 22,377.49 and 9,141.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,216.39 : 22,377.49 = 9,141.31 : x
2. Step 2: Convert to fraction form
   16,216.39/22,377.49 = 9,141.31/x
3. Step 3: Cross multiply
   16,216.39x = 22,377.49 × 9,141.31
4. Step 4: Simplify right side
   16,216.39x = 204,559,573.11
5. Step 5: Solve for x
   x = 204,559,573.11/16,216.39
6. Step 6: Final answer
   x = 12,614.37