Finding the Fourth Proportional to 13,104.27, 18,084.10 and 7,439.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,104.27 : 18,084.10 = 7,439.18 : x
2. Step 2: Convert to fraction form
   13,104.27/18,084.10 = 7,439.18/x
3. Step 3: Cross multiply
   13,104.27x = 18,084.10 × 7,439.18
4. Step 4: Simplify right side
   13,104.27x = 134,530,892.88
5. Step 5: Solve for x
   x = 134,530,892.88/13,104.27
6. Step 6: Final answer
   x = 10,266.19