Finding the Fourth Proportional to 22,219.50, 30,660.24 and 12,659.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,219.50 : 30,660.24 = 12,659.43 : x
2. Step 2: Convert to fraction form
   22,219.50/30,660.24 = 12,659.43/x
3. Step 3: Cross multiply
   22,219.50x = 30,660.24 × 12,659.43
4. Step 4: Simplify right side
   22,219.50x = 388,141,162.06
5. Step 5: Solve for x
   x = 388,141,162.06/22,219.50
6. Step 6: Final answer
   x = 17,468.49