Finding the Fourth Proportional to 22,299.62, 30,774.06 and 12,608.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,299.62 : 30,774.06 = 12,608.30 : x
2. Step 2: Convert to fraction form
   22,299.62/30,774.06 = 12,608.30/x
3. Step 3: Cross multiply
   22,299.62x = 30,774.06 × 12,608.30
4. Step 4: Simplify right side
   22,299.62x = 388,008,580.70
5. Step 5: Solve for x
   x = 388,008,580.70/22,299.62
6. Step 6: Final answer
   x = 17,399.78