Finding the Fourth Proportional to 16,216.68, 22,377.42 and 9,144.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,216.68 : 22,377.42 = 9,144.30 : x
2. Step 2: Convert to fraction form
   16,216.68/22,377.42 = 9,144.30/x
3. Step 3: Cross multiply
   16,216.68x = 22,377.42 × 9,144.30
4. Step 4: Simplify right side
   16,216.68x = 204,625,841.71
5. Step 5: Solve for x
   x = 204,625,841.71/16,216.68
6. Step 6: Final answer
   x = 12,618.23