Finding the Fourth Proportional to 18,648.89, 27,963.71 and 5,499.55

Step by Step Solution

1. Step 1: Write the proportion equation
   18,648.89 : 27,963.71 = 5,499.55 : x
2. Step 2: Convert to fraction form
   18,648.89/27,963.71 = 5,499.55/x
3. Step 3: Cross multiply
   18,648.89x = 27,963.71 × 5,499.55
4. Step 4: Simplify right side
   18,648.89x = 153,787,821.33
5. Step 5: Solve for x
   x = 153,787,821.33/18,648.89
6. Step 6: Final answer
   x = 8,246.49