Finding the Fourth Proportional to 8,104.32, 12,147.60 and 3,173.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,104.32 : 12,147.60 = 3,173.12 : x
2. Step 2: Convert to fraction form
   8,104.32/12,147.60 = 3,173.12/x
3. Step 3: Cross multiply
   8,104.32x = 12,147.60 × 3,173.12
4. Step 4: Simplify right side
   8,104.32x = 38,545,792.51
5. Step 5: Solve for x
   x = 38,545,792.51/8,104.32
6. Step 6: Final answer
   x = 4,756.20