Finding the Fourth Proportional to 35,786.05, 49,383.80 and 19,870.09

Step by Step Solution

1. Step 1: Write the proportion equation
   35,786.05 : 49,383.80 = 19,870.09 : x
2. Step 2: Convert to fraction form
   35,786.05/49,383.80 = 19,870.09/x
3. Step 3: Cross multiply
   35,786.05x = 49,383.80 × 19,870.09
4. Step 4: Simplify right side
   35,786.05x = 981,260,550.54
5. Step 5: Solve for x
   x = 981,260,550.54/35,786.05
6. Step 6: Final answer
   x = 27,420.20