Finding the Fourth Proportional to 18,738.72, 28,109.30 and 5,592.42

Step by Step Solution

1. Step 1: Write the proportion equation
   18,738.72 : 28,109.30 = 5,592.42 : x
2. Step 2: Convert to fraction form
   18,738.72/28,109.30 = 5,592.42/x
3. Step 3: Cross multiply
   18,738.72x = 28,109.30 × 5,592.42
4. Step 4: Simplify right side
   18,738.72x = 157,198,983.54
5. Step 5: Solve for x
   x = 157,198,983.54/18,738.72
6. Step 6: Final answer
   x = 8,388.99