Finding the Fourth Proportional to 37,165, 51,287.70 and 20,399.08

Step by Step Solution

1. Step 1: Write the proportion equation
   37,165 : 51,287.70 = 20,399.08 : x
2. Step 2: Convert to fraction form
   37,165/51,287.70 = 20,399.08/x
3. Step 3: Cross multiply
   37,165x = 51,287.70 × 20,399.08
4. Step 4: Simplify right side
   37,165x = 1,046,221,895.32
5. Step 5: Solve for x
   x = 1,046,221,895.32/37,165
6. Step 6: Final answer
   x = 28,150.73