Finding the Fourth Proportional to 37,771.89, 52,122.03 and 21,857.37

Step by Step Solution

1. Step 1: Write the proportion equation
   37,771.89 : 52,122.03 = 21,857.37 : x
2. Step 2: Convert to fraction form
   37,771.89/52,122.03 = 21,857.37/x
3. Step 3: Cross multiply
   37,771.89x = 52,122.03 × 21,857.37
4. Step 4: Simplify right side
   37,771.89x = 1,139,250,494.86
5. Step 5: Solve for x
   x = 1,139,250,494.86/37,771.89
6. Step 6: Final answer
   x = 30,161.33