Finding the Fourth Proportional to 22,461.78, 30,996.78 and 12,391.14

Step by Step Solution

1. Step 1: Write the proportion equation
   22,461.78 : 30,996.78 = 12,391.14 : x
2. Step 2: Convert to fraction form
   22,461.78/30,996.78 = 12,391.14/x
3. Step 3: Cross multiply
   22,461.78x = 30,996.78 × 12,391.14
4. Step 4: Simplify right side
   22,461.78x = 384,085,440.53
5. Step 5: Solve for x
   x = 384,085,440.53/22,461.78
6. Step 6: Final answer
   x = 17,099.51