Finding the Fourth Proportional to 13,096.34, 18,073.33 and 7,128.39

Step by Step Solution

1. Step 1: Write the proportion equation
   13,096.34 : 18,073.33 = 7,128.39 : x
2. Step 2: Convert to fraction form
   13,096.34/18,073.33 = 7,128.39/x
3. Step 3: Cross multiply
   13,096.34x = 18,073.33 × 7,128.39
4. Step 4: Simplify right side
   13,096.34x = 128,833,794.79
5. Step 5: Solve for x
   x = 128,833,794.79/13,096.34
6. Step 6: Final answer
   x = 9,837.39