Finding the Fourth Proportional to 12,018.56, 16,587.20 and 6,713.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,018.56 : 16,587.20 = 6,713.68 : x
2. Step 2: Convert to fraction form
   12,018.56/16,587.20 = 6,713.68/x
3. Step 3: Cross multiply
   12,018.56x = 16,587.20 × 6,713.68
4. Step 4: Simplify right side
   12,018.56x = 111,361,152.90
5. Step 5: Solve for x
   x = 111,361,152.90/12,018.56
6. Step 6: Final answer
   x = 9,265.77