Finding the Fourth Proportional to 8,117.60, 12,166.61 and 3,951.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,117.60 : 12,166.61 = 3,951.37 : x
2. Step 2: Convert to fraction form
   8,117.60/12,166.61 = 3,951.37/x
3. Step 3: Cross multiply
   8,117.60x = 12,166.61 × 3,951.37
4. Step 4: Simplify right side
   8,117.60x = 48,074,732.52
5. Step 5: Solve for x
   x = 48,074,732.52/8,117.60
6. Step 6: Final answer
   x = 5,922.28