Finding the Fourth Proportional to 22,365.47, 30,864.42 and 12,294.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,365.47 : 30,864.42 = 12,294.78 : x
2. Step 2: Convert to fraction form
   22,365.47/30,864.42 = 12,294.78/x
3. Step 3: Cross multiply
   22,365.47x = 30,864.42 × 12,294.78
4. Step 4: Simplify right side
   22,365.47x = 379,471,253.73
5. Step 5: Solve for x
   x = 379,471,253.73/22,365.47
6. Step 6: Final answer
   x = 16,966.84