Finding the Fourth Proportional to 37,022.29, 55,508.73 and 20,390.20

Step by Step Solution

1. Step 1: Write the proportion equation
   37,022.29 : 55,508.73 = 20,390.20 : x
2. Step 2: Convert to fraction form
   37,022.29/55,508.73 = 20,390.20/x
3. Step 3: Cross multiply
   37,022.29x = 55,508.73 × 20,390.20
4. Step 4: Simplify right side
   37,022.29x = 1,131,834,106.45
5. Step 5: Solve for x
   x = 1,131,834,106.45/37,022.29
6. Step 6: Final answer
   x = 30,571.69