Finding the Fourth Proportional to 10,156.12, 14,020.56 and 9,613.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,156.12 : 14,020.56 = 9,613.48 : x
2. Step 2: Convert to fraction form
   10,156.12/14,020.56 = 9,613.48/x
3. Step 3: Cross multiply
   10,156.12x = 14,020.56 × 9,613.48
4. Step 4: Simplify right side
   10,156.12x = 134,786,373.15
5. Step 5: Solve for x
   x = 134,786,373.15/10,156.12
6. Step 6: Final answer
   x = 13,271.44