Finding the Fourth Proportional to 12,271.64, 18,405.69 and 3,950.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.64 : 18,405.69 = 3,950.58 : x
2. Step 2: Convert to fraction form
   12,271.64/18,405.69 = 3,950.58/x
3. Step 3: Cross multiply
   12,271.64x = 18,405.69 × 3,950.58
4. Step 4: Simplify right side
   12,271.64x = 72,713,150.80
5. Step 5: Solve for x
   x = 72,713,150.80/12,271.64
6. Step 6: Final answer
   x = 5,925.30