Finding the Fourth Proportional to 13,230.18, 18,258.17 and 7,262.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,230.18 : 18,258.17 = 7,262.05 : x
2. Step 2: Convert to fraction form
   13,230.18/18,258.17 = 7,262.05/x
3. Step 3: Cross multiply
   13,230.18x = 18,258.17 × 7,262.05
4. Step 4: Simplify right side
   13,230.18x = 132,591,743.45
5. Step 5: Solve for x
   x = 132,591,743.45/13,230.18
6. Step 6: Final answer
   x = 10,021.92