Finding the Fourth Proportional to 37,633.62, 51,935.31 and 20,638.56

Step by Step Solution

1. Step 1: Write the proportion equation
   37,633.62 : 51,935.31 = 20,638.56 : x
2. Step 2: Convert to fraction form
   37,633.62/51,935.31 = 20,638.56/x
3. Step 3: Cross multiply
   37,633.62x = 51,935.31 × 20,638.56
4. Step 4: Simplify right side
   37,633.62x = 1,071,870,011.55
5. Step 5: Solve for x
   x = 1,071,870,011.55/37,633.62
6. Step 6: Final answer
   x = 28,481.71