Finding the Fourth Proportional to 37,775.92, 52,128.71 and 20,777.42

Step by Step Solution

1. Step 1: Write the proportion equation
   37,775.92 : 52,128.71 = 20,777.42 : x
2. Step 2: Convert to fraction form
   37,775.92/52,128.71 = 20,777.42/x
3. Step 3: Cross multiply
   37,775.92x = 52,128.71 × 20,777.42
4. Step 4: Simplify right side
   37,775.92x = 1,083,100,115.83
5. Step 5: Solve for x
   x = 1,083,100,115.83/37,775.92
6. Step 6: Final answer
   x = 28,671.71