Finding the Fourth Proportional to 10,271.27, 14,149.79 and 9,771.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,271.27 : 14,149.79 = 9,771.00 : x
2. Step 2: Convert to fraction form
   10,271.27/14,149.79 = 9,771.00/x
3. Step 3: Cross multiply
   10,271.27x = 14,149.79 × 9,771.00
4. Step 4: Simplify right side
   10,271.27x = 138,257,532.81
5. Step 5: Solve for x
   x = 138,257,532.81/10,271.27
6. Step 6: Final answer
   x = 13,460.60