Finding the Fourth Proportional to 12,517.94, 18,778.91 and 5,940.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,517.94 : 18,778.91 = 5,940.54 : x
2. Step 2: Convert to fraction form
   12,517.94/18,778.91 = 5,940.54/x
3. Step 3: Cross multiply
   12,517.94x = 18,778.91 × 5,940.54
4. Step 4: Simplify right side
   12,517.94x = 111,556,836.31
5. Step 5: Solve for x
   x = 111,556,836.31/12,517.94
6. Step 6: Final answer
   x = 8,911.75