Finding the Fourth Proportional to 12,261.24, 18,392.52 and 3,940.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,261.24 : 18,392.52 = 3,940.62 : x
2. Step 2: Convert to fraction form
   12,261.24/18,392.52 = 3,940.62/x
3. Step 3: Cross multiply
   12,261.24x = 18,392.52 × 3,940.62
4. Step 4: Simplify right side
   12,261.24x = 72,477,932.16
5. Step 5: Solve for x
   x = 72,477,932.16/12,261.24
6. Step 6: Final answer
   x = 5,911.14