Finding the Fourth Proportional to 37,687.38, 52,010.37 and 20,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,687.38 : 52,010.37 = 20,920.50 : x
2. Step 2: Convert to fraction form
   37,687.38/52,010.37 = 20,920.50/x
3. Step 3: Cross multiply
   37,687.38x = 52,010.37 × 20,920.50
4. Step 4: Simplify right side
   37,687.38x = 1,088,082,945.59
5. Step 5: Solve for x
   x = 1,088,082,945.59/37,687.38
6. Step 6: Final answer
   x = 28,871.28