Finding the Fourth Proportional to 10,271.57, 14,150.16 and 9,771.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,271.57 : 14,150.16 = 9,771.28 : x
2. Step 2: Convert to fraction form
   10,271.57/14,150.16 = 9,771.28/x
3. Step 3: Cross multiply
   10,271.57x = 14,150.16 × 9,771.28
4. Step 4: Simplify right side
   10,271.57x = 138,265,140.03
5. Step 5: Solve for x
   x = 138,265,140.03/10,271.57
6. Step 6: Final answer
   x = 13,460.96