Finding the Fourth Proportional to 12,103.68, 18,145.20 and 5,527.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,103.68 : 18,145.20 = 5,527.52 : x
2. Step 2: Convert to fraction form
   12,103.68/18,145.20 = 5,527.52/x
3. Step 3: Cross multiply
   12,103.68x = 18,145.20 × 5,527.52
4. Step 4: Simplify right side
   12,103.68x = 100,297,955.90
5. Step 5: Solve for x
   x = 100,297,955.90/12,103.68
6. Step 6: Final answer
   x = 8,286.57