Finding the Fourth Proportional to 8,039.37, 12,056.72 and 3,107.85

Step by Step Solution

1. Step 1: Write the proportion equation
   8,039.37 : 12,056.72 = 3,107.85 : x
2. Step 2: Convert to fraction form
   8,039.37/12,056.72 = 3,107.85/x
3. Step 3: Cross multiply
   8,039.37x = 12,056.72 × 3,107.85
4. Step 4: Simplify right side
   8,039.37x = 37,470,484.32
5. Step 5: Solve for x
   x = 37,470,484.32/8,039.37
6. Step 6: Final answer
   x = 4,660.87