Finding the Fourth Proportional to 8,105.58, 12,152.40 and 3,172.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.58 : 12,152.40 = 3,172.68 : x
2. Step 2: Convert to fraction form
   8,105.58/12,152.40 = 3,172.68/x
3. Step 3: Cross multiply
   8,105.58x = 12,152.40 × 3,172.68
4. Step 4: Simplify right side
   8,105.58x = 38,555,676.43
5. Step 5: Solve for x
   x = 38,555,676.43/8,105.58
6. Step 6: Final answer
   x = 4,756.68