Finding the Fourth Proportional to 37,661.53, 51,970.87 and 20,665.47

Step by Step Solution

1. Step 1: Write the proportion equation
   37,661.53 : 51,970.87 = 20,665.47 : x
2. Step 2: Convert to fraction form
   37,661.53/51,970.87 = 20,665.47/x
3. Step 3: Cross multiply
   37,661.53x = 51,970.87 × 20,665.47
4. Step 4: Simplify right side
   37,661.53x = 1,074,002,454.86
5. Step 5: Solve for x
   x = 1,074,002,454.86/37,661.53
6. Step 6: Final answer
   x = 28,517.23