Finding the Fourth Proportional to 22,168.89, 30,585.20 and 12,731.99

Step by Step Solution

1. Step 1: Write the proportion equation
   22,168.89 : 30,585.20 = 12,731.99 : x
2. Step 2: Convert to fraction form
   22,168.89/30,585.20 = 12,731.99/x
3. Step 3: Cross multiply
   22,168.89x = 30,585.20 × 12,731.99
4. Step 4: Simplify right side
   22,168.89x = 389,410,243.96
5. Step 5: Solve for x
   x = 389,410,243.96/22,168.89
6. Step 6: Final answer
   x = 17,565.62