Finding the Fourth Proportional to 22,359.18, 30,855.12 and 12,287.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,359.18 : 30,855.12 = 12,287.64 : x
2. Step 2: Convert to fraction form
   22,359.18/30,855.12 = 12,287.64/x
3. Step 3: Cross multiply
   22,359.18x = 30,855.12 × 12,287.64
4. Step 4: Simplify right side
   22,359.18x = 379,136,606.72
5. Step 5: Solve for x
   x = 379,136,606.72/22,359.18
6. Step 6: Final answer
   x = 16,956.64