Finding the Fourth Proportional to 13,018.16, 17,965.09 and 7,049.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.16 : 17,965.09 = 7,049.81 : x
2. Step 2: Convert to fraction form
   13,018.16/17,965.09 = 7,049.81/x
3. Step 3: Cross multiply
   13,018.16x = 17,965.09 × 7,049.81
4. Step 4: Simplify right side
   13,018.16x = 126,650,524.86
5. Step 5: Solve for x
   x = 126,650,524.86/13,018.16
6. Step 6: Final answer
   x = 9,728.76