Finding the Fourth Proportional to 13,061.92, 18,018.72 and 8,341.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.92 : 18,018.72 = 8,341.20 : x
2. Step 2: Convert to fraction form
   13,061.92/18,018.72 = 8,341.20/x
3. Step 3: Cross multiply
   13,061.92x = 18,018.72 × 8,341.20
4. Step 4: Simplify right side
   13,061.92x = 150,297,747.26
5. Step 5: Solve for x
   x = 150,297,747.26/13,061.92
6. Step 6: Final answer
   x = 11,506.56