Finding the Fourth Proportional to 13,105.28, 18,084.14 and 7,440.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,105.28 : 18,084.14 = 7,440.27 : x
2. Step 2: Convert to fraction form
   13,105.28/18,084.14 = 7,440.27/x
3. Step 3: Cross multiply
   13,105.28x = 18,084.14 × 7,440.27
4. Step 4: Simplify right side
   13,105.28x = 134,550,884.32
5. Step 5: Solve for x
   x = 134,550,884.32/13,105.28
6. Step 6: Final answer
   x = 10,266.92