Finding the Fourth Proportional to 22,436.84, 30,964.30 and 12,879.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,436.84 : 30,964.30 = 12,879.82 : x
2. Step 2: Convert to fraction form
   22,436.84/30,964.30 = 12,879.82/x
3. Step 3: Cross multiply
   22,436.84x = 30,964.30 × 12,879.82
4. Step 4: Simplify right side
   22,436.84x = 398,814,468.62
5. Step 5: Solve for x
   x = 398,814,468.62/22,436.84
6. Step 6: Final answer
   x = 17,774.99