Finding the Fourth Proportional to 16,131.27, 22,262.94 and 9,418.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,131.27 : 22,262.94 = 9,418.56 : x
2. Step 2: Convert to fraction form
   16,131.27/22,262.94 = 9,418.56/x
3. Step 3: Cross multiply
   16,131.27x = 22,262.94 × 9,418.56
4. Step 4: Simplify right side
   16,131.27x = 209,684,836.17
5. Step 5: Solve for x
   x = 209,684,836.17/16,131.27
6. Step 6: Final answer
   x = 12,998.66