Finding the Fourth Proportional to 37,939.86, 52,359.91 and 20,947.38

Step by Step Solution

1. Step 1: Write the proportion equation
   37,939.86 : 52,359.91 = 20,947.38 : x
2. Step 2: Convert to fraction form
   37,939.86/52,359.91 = 20,947.38/x
3. Step 3: Cross multiply
   37,939.86x = 52,359.91 × 20,947.38
4. Step 4: Simplify right side
   37,939.86x = 1,096,802,931.54
5. Step 5: Solve for x
   x = 1,096,802,931.54/37,939.86
6. Step 6: Final answer
   x = 28,908.99