Finding the Fourth Proportional to 13,096.18, 18,073.13 and 7,128.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,096.18 : 18,073.13 = 7,128.24 : x
2. Step 2: Convert to fraction form
   13,096.18/18,073.13 = 7,128.24/x
3. Step 3: Cross multiply
   13,096.18x = 18,073.13 × 7,128.24
4. Step 4: Simplify right side
   13,096.18x = 128,829,504.78
5. Step 5: Solve for x
   x = 128,829,504.78/13,096.18
6. Step 6: Final answer
   x = 9,837.18