Finding the Fourth Proportional to 22,662, 33,960.15 and 12,780.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,662 : 33,960.15 = 12,780.27 : x
2. Step 2: Convert to fraction form
   22,662/33,960.15 = 12,780.27/x
3. Step 3: Cross multiply
   22,662x = 33,960.15 × 12,780.27
4. Step 4: Simplify right side
   22,662x = 434,019,886.24
5. Step 5: Solve for x
   x = 434,019,886.24/22,662
6. Step 6: Final answer
   x = 19,151.88