Finding the Fourth Proportional to 19,820.82, 27,348.24 and 13,448.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,820.82 : 27,348.24 = 13,448.28 : x
2. Step 2: Convert to fraction form
   19,820.82/27,348.24 = 13,448.28/x
3. Step 3: Cross multiply
   19,820.82x = 27,348.24 × 13,448.28
4. Step 4: Simplify right side
   19,820.82x = 367,786,789.03
5. Step 5: Solve for x
   x = 367,786,789.03/19,820.82
6. Step 6: Final answer
   x = 18,555.58