Finding the Fourth Proportional to 12,391.05, 18,588.52 and 4,069.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,391.05 : 18,588.52 = 4,069.18 : x
2. Step 2: Convert to fraction form
   12,391.05/18,588.52 = 4,069.18/x
3. Step 3: Cross multiply
   12,391.05x = 18,588.52 × 4,069.18
4. Step 4: Simplify right side
   12,391.05x = 75,639,940.87
5. Step 5: Solve for x
   x = 75,639,940.87/12,391.05
6. Step 6: Final answer
   x = 6,104.40