Finding the Fourth Proportional to 13,046.30, 18,003.85 and 7,745.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,046.30 : 18,003.85 = 7,745.48 : x
2. Step 2: Convert to fraction form
   13,046.30/18,003.85 = 7,745.48/x
3. Step 3: Cross multiply
   13,046.30x = 18,003.85 × 7,745.48
4. Step 4: Simplify right side
   13,046.30x = 139,448,350.72
5. Step 5: Solve for x
   x = 139,448,350.72/13,046.30
6. Step 6: Final answer
   x = 10,688.73