Finding the Fourth Proportional to 12,284.81, 18,429.84 and 3,965.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,284.81 : 18,429.84 = 3,965.30 : x
2. Step 2: Convert to fraction form
   12,284.81/18,429.84 = 3,965.30/x
3. Step 3: Cross multiply
   12,284.81x = 18,429.84 × 3,965.30
4. Step 4: Simplify right side
   12,284.81x = 73,079,844.55
5. Step 5: Solve for x
   x = 73,079,844.55/12,284.81
6. Step 6: Final answer
   x = 5,948.80