Finding the Fourth Proportional to 12,276.69, 18,415.02 and 3,957.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276.69 : 18,415.02 = 3,957.94 : x
2. Step 2: Convert to fraction form
   12,276.69/18,415.02 = 3,957.94/x
3. Step 3: Cross multiply
   12,276.69x = 18,415.02 × 3,957.94
4. Step 4: Simplify right side
   12,276.69x = 72,885,519.20
5. Step 5: Solve for x
   x = 72,885,519.20/12,276.69
6. Step 6: Final answer
   x = 5,936.90