Finding the Fourth Proportional to 10,313.98, 14,242.78 and 9,761.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,313.98 : 14,242.78 = 9,761.56 : x
2. Step 2: Convert to fraction form
   10,313.98/14,242.78 = 9,761.56/x
3. Step 3: Cross multiply
   10,313.98x = 14,242.78 × 9,761.56
4. Step 4: Simplify right side
   10,313.98x = 139,031,751.54
5. Step 5: Solve for x
   x = 139,031,751.54/10,313.98
6. Step 6: Final answer
   x = 13,479.93