Finding the Fourth Proportional to 37,665.39, 51,978.09 and 20,669.92

Step by Step Solution

1. Step 1: Write the proportion equation
   37,665.39 : 51,978.09 = 20,669.92 : x
2. Step 2: Convert to fraction form
   37,665.39/51,978.09 = 20,669.92/x
3. Step 3: Cross multiply
   37,665.39x = 51,978.09 × 20,669.92
4. Step 4: Simplify right side
   37,665.39x = 1,074,382,962.05
5. Step 5: Solve for x
   x = 1,074,382,962.05/37,665.39
6. Step 6: Final answer
   x = 28,524.41