Finding the Fourth Proportional to 22,461.29, 30,996.94 and 12,389.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,461.29 : 30,996.94 = 12,389.55 : x
2. Step 2: Convert to fraction form
   22,461.29/30,996.94 = 12,389.55/x
3. Step 3: Cross multiply
   22,461.29x = 30,996.94 × 12,389.55
4. Step 4: Simplify right side
   22,461.29x = 384,038,137.98
5. Step 5: Solve for x
   x = 384,038,137.98/22,461.29
6. Step 6: Final answer
   x = 17,097.78