Finding the Fourth Proportional to 37,831.37, 52,205.42 and 21,920.94

Step by Step Solution

1. Step 1: Write the proportion equation
   37,831.37 : 52,205.42 = 21,920.94 : x
2. Step 2: Convert to fraction form
   37,831.37/52,205.42 = 21,920.94/x
3. Step 3: Cross multiply
   37,831.37x = 52,205.42 × 21,920.94
4. Step 4: Simplify right side
   37,831.37x = 1,144,391,769.89
5. Step 5: Solve for x
   x = 1,144,391,769.89/37,831.37
6. Step 6: Final answer
   x = 30,249.81