Finding the Fourth Proportional to 8,491.79, 12,738.27 and 3,556.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,491.79 : 12,738.27 = 3,556.46 : x
2. Step 2: Convert to fraction form
   8,491.79/12,738.27 = 3,556.46/x
3. Step 3: Cross multiply
   8,491.79x = 12,738.27 × 3,556.46
4. Step 4: Simplify right side
   8,491.79x = 45,303,147.72
5. Step 5: Solve for x
   x = 45,303,147.72/8,491.79
6. Step 6: Final answer
   x = 5,334.94