Finding the Fourth Proportional to 22,198.64, 30,635.54 and 12,767

Step by Step Solution

1. Step 1: Write the proportion equation
   22,198.64 : 30,635.54 = 12,767 : x
2. Step 2: Convert to fraction form
   22,198.64/30,635.54 = 12,767/x
3. Step 3: Cross multiply
   22,198.64x = 30,635.54 × 12,767
4. Step 4: Simplify right side
   22,198.64x = 391,123,939.18
5. Step 5: Solve for x
   x = 391,123,939.18/22,198.64
6. Step 6: Final answer
   x = 17,619.27