Finding the Fourth Proportional to 8,656.42, 12,974.12 and 3,969.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,656.42 : 12,974.12 = 3,969.92 : x
2. Step 2: Convert to fraction form
   8,656.42/12,974.12 = 3,969.92/x
3. Step 3: Cross multiply
   8,656.42x = 12,974.12 × 3,969.92
4. Step 4: Simplify right side
   8,656.42x = 51,506,191.86
5. Step 5: Solve for x
   x = 51,506,191.86/8,656.42
6. Step 6: Final answer
   x = 5,950.06