Finding the Fourth Proportional to 7,146.24, 9,861.69 and 3,959.51

Step by Step Solution

1. Step 1: Write the proportion equation
   7,146.24 : 9,861.69 = 3,959.51 : x
2. Step 2: Convert to fraction form
   7,146.24/9,861.69 = 3,959.51/x
3. Step 3: Cross multiply
   7,146.24x = 9,861.69 × 3,959.51
4. Step 4: Simplify right side
   7,146.24x = 39,047,410.86
5. Step 5: Solve for x
   x = 39,047,410.86/7,146.24
6. Step 6: Final answer
   x = 5,464.05