Finding the Fourth Proportional to 16,387.47, 22,614.27 and 9,218.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,387.47 : 22,614.27 = 9,218.16 : x
2. Step 2: Convert to fraction form
   16,387.47/22,614.27 = 9,218.16/x
3. Step 3: Cross multiply
   16,387.47x = 22,614.27 × 9,218.16
4. Step 4: Simplify right side
   16,387.47x = 208,461,959.14
5. Step 5: Solve for x
   x = 208,461,959.14/16,387.47
6. Step 6: Final answer
   x = 12,720.81