Finding the Fourth Proportional to 20,341.59, 30,519.89 and 8,496.60

Step by Step Solution

1. Step 1: Write the proportion equation
   20,341.59 : 30,519.89 = 8,496.60 : x
2. Step 2: Convert to fraction form
   20,341.59/30,519.89 = 8,496.60/x
3. Step 3: Cross multiply
   20,341.59x = 30,519.89 × 8,496.60
4. Step 4: Simplify right side
   20,341.59x = 259,315,297.37
5. Step 5: Solve for x
   x = 259,315,297.37/20,341.59
6. Step 6: Final answer
   x = 12,748.03