Finding the Fourth Proportional to 37,287.18, 51,456.33 and 20,520.18

Step by Step Solution

1. Step 1: Write the proportion equation
   37,287.18 : 51,456.33 = 20,520.18 : x
2. Step 2: Convert to fraction form
   37,287.18/51,456.33 = 20,520.18/x
3. Step 3: Cross multiply
   37,287.18x = 51,456.33 × 20,520.18
4. Step 4: Simplify right side
   37,287.18x = 1,055,893,153.74
5. Step 5: Solve for x
   x = 1,055,893,153.74/37,287.18
6. Step 6: Final answer
   x = 28,317.86