Finding the Fourth Proportional to 35,786.16, 49,382.82 and 19,870.20

Step by Step Solution

1. Step 1: Write the proportion equation
   35,786.16 : 49,382.82 = 19,870.20 : x
2. Step 2: Convert to fraction form
   35,786.16/49,382.82 = 19,870.20/x
3. Step 3: Cross multiply
   35,786.16x = 49,382.82 × 19,870.20
4. Step 4: Simplify right side
   35,786.16x = 981,246,509.96
5. Step 5: Solve for x
   x = 981,246,509.96/35,786.16
6. Step 6: Final answer
   x = 27,419.72