Finding the Fourth Proportional to 22,288.80, 30,757.24 and 12,215.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,288.80 : 30,757.24 = 12,215.24 : x
2. Step 2: Convert to fraction form
   22,288.80/30,757.24 = 12,215.24/x
3. Step 3: Cross multiply
   22,288.80x = 30,757.24 × 12,215.24
4. Step 4: Simplify right side
   22,288.80x = 375,707,068.34
5. Step 5: Solve for x
   x = 375,707,068.34/22,288.80
6. Step 6: Final answer
   x = 16,856.32