Finding the Fourth Proportional to 22,389.72, 30,896.62 and 12,316.54

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.72 : 30,896.62 = 12,316.54 : x
2. Step 2: Convert to fraction form
   22,389.72/30,896.62 = 12,316.54/x
3. Step 3: Cross multiply
   22,389.72x = 30,896.62 × 12,316.54
4. Step 4: Simplify right side
   22,389.72x = 380,539,456.09
5. Step 5: Solve for x
   x = 380,539,456.09/22,389.72
6. Step 6: Final answer
   x = 16,996.17