Finding the Fourth Proportional to 37,619.98, 51,912.71 and 20,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,619.98 : 51,912.71 = 20,621.50 : x
2. Step 2: Convert to fraction form
   37,619.98/51,912.71 = 20,621.50/x
3. Step 3: Cross multiply
   37,619.98x = 51,912.71 × 20,621.50
4. Step 4: Simplify right side
   37,619.98x = 1,070,517,949.27
5. Step 5: Solve for x
   x = 1,070,517,949.27/37,619.98
6. Step 6: Final answer
   x = 28,456.10