Finding the Fourth Proportional to 37,849.20, 52,229.92 and 21,938.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,849.20 : 52,229.92 = 21,938.72 : x
2. Step 2: Convert to fraction form
   37,849.20/52,229.92 = 21,938.72/x
3. Step 3: Cross multiply
   37,849.20x = 52,229.92 × 21,938.72
4. Step 4: Simplify right side
   37,849.20x = 1,145,857,590.50
5. Step 5: Solve for x
   x = 1,145,857,590.50/37,849.20
6. Step 6: Final answer
   x = 30,274.29