Finding the Fourth Proportional to 3,926.43, 5,416.46 and 2,581.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.43 : 5,416.46 = 2,581.86 : x
2. Step 2: Convert to fraction form
   3,926.43/5,416.46 = 2,581.86/x
3. Step 3: Cross multiply
   3,926.43x = 5,416.46 × 2,581.86
4. Step 4: Simplify right side
   3,926.43x = 13,984,541.42
5. Step 5: Solve for x
   x = 13,984,541.42/3,926.43
6. Step 6: Final answer
   x = 3,561.64