Finding the Fourth Proportional to 8,223.60, 12,339.88 and 3,028.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,223.60 : 12,339.88 = 3,028.72 : x
2. Step 2: Convert to fraction form
   8,223.60/12,339.88 = 3,028.72/x
3. Step 3: Cross multiply
   8,223.60x = 12,339.88 × 3,028.72
4. Step 4: Simplify right side
   8,223.60x = 37,374,041.35
5. Step 5: Solve for x
   x = 37,374,041.35/8,223.60
6. Step 6: Final answer
   x = 4,544.73