Finding the Fourth Proportional to 5,315.16, 8,003.62 and 3,938.26

Step by Step Solution

1. Step 1: Write the proportion equation
   5,315.16 : 8,003.62 = 3,938.26 : x
2. Step 2: Convert to fraction form
   5,315.16/8,003.62 = 3,938.26/x
3. Step 3: Cross multiply
   5,315.16x = 8,003.62 × 3,938.26
4. Step 4: Simplify right side
   5,315.16x = 31,520,336.50
5. Step 5: Solve for x
   x = 31,520,336.50/5,315.16
6. Step 6: Final answer
   x = 5,930.27