Finding the Fourth Proportional to 10,312.98, 14,241.40 and 9,760.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,312.98 : 14,241.40 = 9,760.56 : x
2. Step 2: Convert to fraction form
   10,312.98/14,241.40 = 9,760.56/x
3. Step 3: Cross multiply
   10,312.98x = 14,241.40 × 9,760.56
4. Step 4: Simplify right side
   10,312.98x = 139,004,039.18
5. Step 5: Solve for x
   x = 139,004,039.18/10,312.98
6. Step 6: Final answer
   x = 13,478.55