Finding the Fourth Proportional to 8,494.02, 12,738.79 and 3,156.73

Step by Step Solution

1. Step 1: Write the proportion equation
   8,494.02 : 12,738.79 = 3,156.73 : x
2. Step 2: Convert to fraction form
   8,494.02/12,738.79 = 3,156.73/x
3. Step 3: Cross multiply
   8,494.02x = 12,738.79 × 3,156.73
4. Step 4: Simplify right side
   8,494.02x = 40,212,920.56
5. Step 5: Solve for x
   x = 40,212,920.56/8,494.02
6. Step 6: Final answer
   x = 4,734.26