Finding the Fourth Proportional to 11,078.88, 16,615.32 and 5,528.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,078.88 : 16,615.32 = 5,528.10 : x
2. Step 2: Convert to fraction form
   11,078.88/16,615.32 = 5,528.10/x
3. Step 3: Cross multiply
   11,078.88x = 16,615.32 × 5,528.10
4. Step 4: Simplify right side
   11,078.88x = 91,851,150.49
5. Step 5: Solve for x
   x = 91,851,150.49/11,078.88
6. Step 6: Final answer
   x = 8,290.65