Finding the Fourth Proportional to 12,728.48, 17,558.88 and 8,003.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,728.48 : 17,558.88 = 8,003.84 : x
2. Step 2: Convert to fraction form
   12,728.48/17,558.88 = 8,003.84/x
3. Step 3: Cross multiply
   12,728.48x = 17,558.88 × 8,003.84
4. Step 4: Simplify right side
   12,728.48x = 140,538,466.10
5. Step 5: Solve for x
   x = 140,538,466.10/12,728.48
6. Step 6: Final answer
   x = 11,041.26