Finding the Fourth Proportional to 12,292.47, 18,440.37 and 3,969.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,292.47 : 18,440.37 = 3,969.72 : x
2. Step 2: Convert to fraction form
   12,292.47/18,440.37 = 3,969.72/x
3. Step 3: Cross multiply
   12,292.47x = 18,440.37 × 3,969.72
4. Step 4: Simplify right side
   12,292.47x = 73,203,105.60
5. Step 5: Solve for x
   x = 73,203,105.60/12,292.47
6. Step 6: Final answer
   x = 5,955.12