Finding the Fourth Proportional to 36,221.87, 49,987.47 and 21,112.09

Step by Step Solution

1. Step 1: Write the proportion equation
   36,221.87 : 49,987.47 = 21,112.09 : x
2. Step 2: Convert to fraction form
   36,221.87/49,987.47 = 21,112.09/x
3. Step 3: Cross multiply
   36,221.87x = 49,987.47 × 21,112.09
4. Step 4: Simplify right side
   36,221.87x = 1,055,340,200.89
5. Step 5: Solve for x
   x = 1,055,340,200.89/36,221.87
6. Step 6: Final answer
   x = 29,135.44