Finding the Fourth Proportional to 8,483.40, 12,726.18 and 3,288.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,483.40 : 12,726.18 = 3,288.60 : x
2. Step 2: Convert to fraction form
   8,483.40/12,726.18 = 3,288.60/x
3. Step 3: Cross multiply
   8,483.40x = 12,726.18 × 3,288.60
4. Step 4: Simplify right side
   8,483.40x = 41,851,315.55
5. Step 5: Solve for x
   x = 41,851,315.55/8,483.40
6. Step 6: Final answer
   x = 4,933.32