Finding the Fourth Proportional to 37,783.38, 52,142.28 and 20,786.74

Step by Step Solution

1. Step 1: Write the proportion equation
   37,783.38 : 52,142.28 = 20,786.74 : x
2. Step 2: Convert to fraction form
   37,783.38/52,142.28 = 20,786.74/x
3. Step 3: Cross multiply
   37,783.38x = 52,142.28 × 20,786.74
4. Step 4: Simplify right side
   37,783.38x = 1,083,868,017.37
5. Step 5: Solve for x
   x = 1,083,868,017.37/37,783.38
6. Step 6: Final answer
   x = 28,686.37