Finding the Fourth Proportional to 37,831, 52,206.78 and 21,067.96

Step by Step Solution

1. Step 1: Write the proportion equation
   37,831 : 52,206.78 = 21,067.96 : x
2. Step 2: Convert to fraction form
   37,831/52,206.78 = 21,067.96/x
3. Step 3: Cross multiply
   37,831x = 52,206.78 × 21,067.96
4. Step 4: Simplify right side
   37,831x = 1,099,890,352.77
5. Step 5: Solve for x
   x = 1,099,890,352.77/37,831
6. Step 6: Final answer
   x = 29,073.78