Finding the Fourth Proportional to 16,773.42, 23,146.38 and 9,218.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,773.42 : 23,146.38 = 9,218.28 : x
2. Step 2: Convert to fraction form
   16,773.42/23,146.38 = 9,218.28/x
3. Step 3: Cross multiply
   16,773.42x = 23,146.38 × 9,218.28
4. Step 4: Simplify right side
   16,773.42x = 213,369,811.83
5. Step 5: Solve for x
   x = 213,369,811.83/16,773.42
6. Step 6: Final answer
   x = 12,720.71