Finding the Fourth Proportional to 22,311.36, 30,789.52 and 12,239.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,311.36 : 30,789.52 = 12,239.52 : x
2. Step 2: Convert to fraction form
   22,311.36/30,789.52 = 12,239.52/x
3. Step 3: Cross multiply
   22,311.36x = 30,789.52 × 12,239.52
4. Step 4: Simplify right side
   22,311.36x = 376,848,945.83
5. Step 5: Solve for x
   x = 376,848,945.83/22,311.36
6. Step 6: Final answer
   x = 16,890.45