Finding the Fourth Proportional to 13,112.41, 18,095.34 and 7,144.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,112.41 : 18,095.34 = 7,144.33 : x
2. Step 2: Convert to fraction form
   13,112.41/18,095.34 = 7,144.33/x
3. Step 3: Cross multiply
   13,112.41x = 18,095.34 × 7,144.33
4. Step 4: Simplify right side
   13,112.41x = 129,279,080.42
5. Step 5: Solve for x
   x = 129,279,080.42/13,112.41
6. Step 6: Final answer
   x = 9,859.29