Finding the Fourth Proportional to 13,112.98, 18,096.34 and 7,144.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,112.98 : 18,096.34 = 7,144.84 : x
2. Step 2: Convert to fraction form
   13,112.98/18,096.34 = 7,144.84/x
3. Step 3: Cross multiply
   13,112.98x = 18,096.34 × 7,144.84
4. Step 4: Simplify right side
   13,112.98x = 129,295,453.89
5. Step 5: Solve for x
   x = 129,295,453.89/13,112.98
6. Step 6: Final answer
   x = 9,860.11