Finding the Fourth Proportional to 22,311.78, 33,456.89 and 12,954.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,311.78 : 33,456.89 = 12,954.15 : x
2. Step 2: Convert to fraction form
   22,311.78/33,456.89 = 12,954.15/x
3. Step 3: Cross multiply
   22,311.78x = 33,456.89 × 12,954.15
4. Step 4: Simplify right side
   22,311.78x = 433,405,506.82
5. Step 5: Solve for x
   x = 433,405,506.82/22,311.78
6. Step 6: Final answer
   x = 19,424.97