Finding the Fourth Proportional to 16,223.84, 22,362.56 and 12,680.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,223.84 : 22,362.56 = 12,680.80 : x
2. Step 2: Convert to fraction form
   16,223.84/22,362.56 = 12,680.80/x
3. Step 3: Cross multiply
   16,223.84x = 22,362.56 × 12,680.80
4. Step 4: Simplify right side
   16,223.84x = 283,575,150.85
5. Step 5: Solve for x
   x = 283,575,150.85/16,223.84
6. Step 6: Final answer
   x = 17,478.92