Finding the Fourth Proportional to 37,185.72, 51,315.42 and 21,872.28

Step by Step Solution

1. Step 1: Write the proportion equation
   37,185.72 : 51,315.42 = 21,872.28 : x
2. Step 2: Convert to fraction form
   37,185.72/51,315.42 = 21,872.28/x
3. Step 3: Cross multiply
   37,185.72x = 51,315.42 × 21,872.28
4. Step 4: Simplify right side
   37,185.72x = 1,122,385,234.56
5. Step 5: Solve for x
   x = 1,122,385,234.56/37,185.72
6. Step 6: Final answer
   x = 30,183.23