Finding the Fourth Proportional to 37,631.79, 51,930.72 and 20,635.16

Step by Step Solution

1. Step 1: Write the proportion equation
   37,631.79 : 51,930.72 = 20,635.16 : x
2. Step 2: Convert to fraction form
   37,631.79/51,930.72 = 20,635.16/x
3. Step 3: Cross multiply
   37,631.79x = 51,930.72 × 20,635.16
4. Step 4: Simplify right side
   37,631.79x = 1,071,598,456.46
5. Step 5: Solve for x
   x = 1,071,598,456.46/37,631.79
6. Step 6: Final answer
   x = 28,475.88