Finding the Fourth Proportional to 8,109.75, 12,166.52 and 3,430.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.75 : 12,166.52 = 3,430.17 : x
2. Step 2: Convert to fraction form
   8,109.75/12,166.52 = 3,430.17/x
3. Step 3: Cross multiply
   8,109.75x = 12,166.52 × 3,430.17
4. Step 4: Simplify right side
   8,109.75x = 41,733,231.91
5. Step 5: Solve for x
   x = 41,733,231.91/8,109.75
6. Step 6: Final answer
   x = 5,146.06