Finding the Fourth Proportional to 12,276.79, 18,418.77 and 3,956.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276.79 : 18,418.77 = 3,956.62 : x
2. Step 2: Convert to fraction form
   12,276.79/18,418.77 = 3,956.62/x
3. Step 3: Cross multiply
   12,276.79x = 18,418.77 × 3,956.62
4. Step 4: Simplify right side
   12,276.79x = 72,876,073.76
5. Step 5: Solve for x
   x = 72,876,073.76/12,276.79
6. Step 6: Final answer
   x = 5,936.09