Finding the Fourth Proportional to 16,767.50, 23,139.72 and 9,214.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,767.50 : 23,139.72 = 9,214.53 : x
2. Step 2: Convert to fraction form
   16,767.50/23,139.72 = 9,214.53/x
3. Step 3: Cross multiply
   16,767.50x = 23,139.72 × 9,214.53
4. Step 4: Simplify right side
   16,767.50x = 213,221,644.13
5. Step 5: Solve for x
   x = 213,221,644.13/16,767.50
6. Step 6: Final answer
   x = 12,716.37