Finding the Fourth Proportional to 22,359.10, 30,853.55 and 12,287.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,359.10 : 30,853.55 = 12,287.42 : x
2. Step 2: Convert to fraction form
   22,359.10/30,853.55 = 12,287.42/x
3. Step 3: Cross multiply
   22,359.10x = 30,853.55 × 12,287.42
4. Step 4: Simplify right side
   22,359.10x = 379,110,527.34
5. Step 5: Solve for x
   x = 379,110,527.34/22,359.10
6. Step 6: Final answer
   x = 16,955.54