Finding the Fourth Proportional to 20,265.82, 27,944.79 and 13,179.10

Step by Step Solution

1. Step 1: Write the proportion equation
   20,265.82 : 27,944.79 = 13,179.10 : x
2. Step 2: Convert to fraction form
   20,265.82/27,944.79 = 13,179.10/x
3. Step 3: Cross multiply
   20,265.82x = 27,944.79 × 13,179.10
4. Step 4: Simplify right side
   20,265.82x = 368,287,181.89
5. Step 5: Solve for x
   x = 368,287,181.89/20,265.82
6. Step 6: Final answer
   x = 18,172.82