Finding the Fourth Proportional to 16,680.50, 23,019.82 and 9,228.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,680.50 : 23,019.82 = 9,228.50 : x
2. Step 2: Convert to fraction form
   16,680.50/23,019.82 = 9,228.50/x
3. Step 3: Cross multiply
   16,680.50x = 23,019.82 × 9,228.50
4. Step 4: Simplify right side
   16,680.50x = 212,438,408.87
5. Step 5: Solve for x
   x = 212,438,408.87/16,680.50
6. Step 6: Final answer
   x = 12,735.73