Finding the Fourth Proportional to 3,926.79, 5,416.81 and 2,488.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.79 : 5,416.81 = 2,488.52 : x
2. Step 2: Convert to fraction form
   3,926.79/5,416.81 = 2,488.52/x
3. Step 3: Cross multiply
   3,926.79x = 5,416.81 × 2,488.52
4. Step 4: Simplify right side
   3,926.79x = 13,479,847.34
5. Step 5: Solve for x
   x = 13,479,847.34/3,926.79
6. Step 6: Final answer
   x = 3,432.79