Finding the Fourth Proportional to 13,144.96, 18,139.23 and 7,175.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,144.96 : 18,139.23 = 7,175.41 : x
2. Step 2: Convert to fraction form
   13,144.96/18,139.23 = 7,175.41/x
3. Step 3: Cross multiply
   13,144.96x = 18,139.23 × 7,175.41
4. Step 4: Simplify right side
   13,144.96x = 130,156,412.33
5. Step 5: Solve for x
   x = 130,156,412.33/13,144.96
6. Step 6: Final answer
   x = 9,901.62