Finding the Fourth Proportional to 5,315.28, 7,336.71 and 3,426.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,315.28 : 7,336.71 = 3,426.86 : x
2. Step 2: Convert to fraction form
   5,315.28/7,336.71 = 3,426.86/x
3. Step 3: Cross multiply
   5,315.28x = 7,336.71 × 3,426.86
4. Step 4: Simplify right side
   5,315.28x = 25,141,878.03
5. Step 5: Solve for x
   x = 25,141,878.03/5,315.28
6. Step 6: Final answer
   x = 4,730.12