Finding the Fourth Proportional to 37,721.82, 52,062.51 and 21,815.52

Step by Step Solution

1. Step 1: Write the proportion equation
   37,721.82 : 52,062.51 = 21,815.52 : x
2. Step 2: Convert to fraction form
   37,721.82/52,062.51 = 21,815.52/x
3. Step 3: Cross multiply
   37,721.82x = 52,062.51 × 21,815.52
4. Step 4: Simplify right side
   37,721.82x = 1,135,770,728.16
5. Step 5: Solve for x
   x = 1,135,770,728.16/37,721.82
6. Step 6: Final answer
   x = 30,109.12