Finding the Fourth Proportional to 13,086.70, 18,059.61 and 7,344.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.70 : 18,059.61 = 7,344.16 : x
2. Step 2: Convert to fraction form
   13,086.70/18,059.61 = 7,344.16/x
3. Step 3: Cross multiply
   13,086.70x = 18,059.61 × 7,344.16
4. Step 4: Simplify right side
   13,086.70x = 132,632,665.38
5. Step 5: Solve for x
   x = 132,632,665.38/13,086.70
6. Step 6: Final answer
   x = 10,134.92