Finding the Fourth Proportional to 13,049.30, 18,007.98 and 7,748.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,049.30 : 18,007.98 = 7,748.48 : x
2. Step 2: Convert to fraction form
   13,049.30/18,007.98 = 7,748.48/x
3. Step 3: Cross multiply
   13,049.30x = 18,007.98 × 7,748.48
4. Step 4: Simplify right side
   13,049.30x = 139,534,472.87
5. Step 5: Solve for x
   x = 139,534,472.87/13,049.30
6. Step 6: Final answer
   x = 10,692.87