Finding the Fourth Proportional to 22,839.35, 31,518.43 and 12,768.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,839.35 : 31,518.43 = 12,768.22 : x
2. Step 2: Convert to fraction form
   22,839.35/31,518.43 = 12,768.22/x
3. Step 3: Cross multiply
   22,839.35x = 31,518.43 × 12,768.22
4. Step 4: Simplify right side
   22,839.35x = 402,434,137.58
5. Step 5: Solve for x
   x = 402,434,137.58/22,839.35
6. Step 6: Final answer
   x = 17,620.21