Finding the Fourth Proportional to 5,312.27, 7,971.92 and 5,271.23

Step by Step Solution

1. Step 1: Write the proportion equation
   5,312.27 : 7,971.92 = 5,271.23 : x
2. Step 2: Convert to fraction form
   5,312.27/7,971.92 = 5,271.23/x
3. Step 3: Cross multiply
   5,312.27x = 7,971.92 × 5,271.23
4. Step 4: Simplify right side
   5,312.27x = 42,021,837.20
5. Step 5: Solve for x
   x = 42,021,837.20/5,312.27
6. Step 6: Final answer
   x = 7,910.33