Finding the Fourth Proportional to 37,938.31, 52,354.87 and 20,942.56

Step by Step Solution

1. Step 1: Write the proportion equation
   37,938.31 : 52,354.87 = 20,942.56 : x
2. Step 2: Convert to fraction form
   37,938.31/52,354.87 = 20,942.56/x
3. Step 3: Cross multiply
   37,938.31x = 52,354.87 × 20,942.56
4. Step 4: Simplify right side
   37,938.31x = 1,096,445,006.27
5. Step 5: Solve for x
   x = 1,096,445,006.27/37,938.31
6. Step 6: Final answer
   x = 28,900.73