Finding the Fourth Proportional to 22,198.06, 30,633.39 and 12,766

Step by Step Solution

1. Step 1: Write the proportion equation
   22,198.06 : 30,633.39 = 12,766 : x
2. Step 2: Convert to fraction form
   22,198.06/30,633.39 = 12,766/x
3. Step 3: Cross multiply
   22,198.06x = 30,633.39 × 12,766
4. Step 4: Simplify right side
   22,198.06x = 391,065,856.74
5. Step 5: Solve for x
   x = 391,065,856.74/22,198.06
6. Step 6: Final answer
   x = 17,617.12