Finding the Fourth Proportional to 16,773.72, 23,146.42 and 9,219.92

Step by Step Solution

1. Step 1: Write the proportion equation
   16,773.72 : 23,146.42 = 9,219.92 : x
2. Step 2: Convert to fraction form
   16,773.72/23,146.42 = 9,219.92/x
3. Step 3: Cross multiply
   16,773.72x = 23,146.42 × 9,219.92
4. Step 4: Simplify right side
   16,773.72x = 213,408,140.69
5. Step 5: Solve for x
   x = 213,408,140.69/16,773.72
6. Step 6: Final answer
   x = 12,722.77