Finding the Fourth Proportional to 8,159.48, 12,238.78 and 5,528.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,159.48 : 12,238.78 = 5,528.08 : x
2. Step 2: Convert to fraction form
   8,159.48/12,238.78 = 5,528.08/x
3. Step 3: Cross multiply
   8,159.48x = 12,238.78 × 5,528.08
4. Step 4: Simplify right side
   8,159.48x = 67,656,954.94
5. Step 5: Solve for x
   x = 67,656,954.94/8,159.48
6. Step 6: Final answer
   x = 8,291.82