Finding the Fourth Proportional to 31,796.48, 43,879.31 and 19,866.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,796.48 : 43,879.31 = 19,866.73 : x
2. Step 2: Convert to fraction form
   31,796.48/43,879.31 = 19,866.73/x
3. Step 3: Cross multiply
   31,796.48x = 43,879.31 × 19,866.73
4. Step 4: Simplify right side
   31,796.48x = 871,738,359.87
5. Step 5: Solve for x
   x = 871,738,359.87/31,796.48
6. Step 6: Final answer
   x = 27,416.20