Finding the Fourth Proportional to 13,311.68, 18,369.41 and 7,568.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,311.68 : 18,369.41 = 7,568.37 : x
2. Step 2: Convert to fraction form
   13,311.68/18,369.41 = 7,568.37/x
3. Step 3: Cross multiply
   13,311.68x = 18,369.41 × 7,568.37
4. Step 4: Simplify right side
   13,311.68x = 139,026,453.72
5. Step 5: Solve for x
   x = 139,026,453.72/13,311.68
6. Step 6: Final answer
   x = 10,443.95