Finding the Fourth Proportional to 8,185.98, 11,287.71 and 5,528.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,185.98 : 11,287.71 = 5,528.78 : x
2. Step 2: Convert to fraction form
   8,185.98/11,287.71 = 5,528.78/x
3. Step 3: Cross multiply
   8,185.98x = 11,287.71 × 5,528.78
4. Step 4: Simplify right side
   8,185.98x = 62,407,208.86
5. Step 5: Solve for x
   x = 62,407,208.86/8,185.98
6. Step 6: Final answer
   x = 7,623.67