Finding the Fourth Proportional to 16,767.48, 23,139.42 and 9,214.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,767.48 : 23,139.42 = 9,214.50 : x
2. Step 2: Convert to fraction form
   16,767.48/23,139.42 = 9,214.50/x
3. Step 3: Cross multiply
   16,767.48x = 23,139.42 × 9,214.50
4. Step 4: Simplify right side
   16,767.48x = 213,218,185.59
5. Step 5: Solve for x
   x = 213,218,185.59/16,767.48
6. Step 6: Final answer
   x = 12,716.17