Finding the Fourth Proportional to 13,048.30, 18,006.60 and 7,747.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,048.30 : 18,006.60 = 7,747.48 : x
2. Step 2: Convert to fraction form
   13,048.30/18,006.60 = 7,747.48/x
3. Step 3: Cross multiply
   13,048.30x = 18,006.60 × 7,747.48
4. Step 4: Simplify right side
   13,048.30x = 139,505,773.37
5. Step 5: Solve for x
   x = 139,505,773.37/13,048.30
6. Step 6: Final answer
   x = 10,691.49