Finding the Fourth Proportional to 21,550.48, 29,730.24 and 13,162

Step by Step Solution

1. Step 1: Write the proportion equation
   21,550.48 : 29,730.24 = 13,162 : x
2. Step 2: Convert to fraction form
   21,550.48/29,730.24 = 13,162/x
3. Step 3: Cross multiply
   21,550.48x = 29,730.24 × 13,162
4. Step 4: Simplify right side
   21,550.48x = 391,309,418.88
5. Step 5: Solve for x
   x = 391,309,418.88/21,550.48
6. Step 6: Final answer
   x = 18,157.81