Finding the Fourth Proportional to 10,152.81, 13,980.33 and 9,560.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,152.81 : 13,980.33 = 9,560.97 : x
2. Step 2: Convert to fraction form
   10,152.81/13,980.33 = 9,560.97/x
3. Step 3: Cross multiply
   10,152.81x = 13,980.33 × 9,560.97
4. Step 4: Simplify right side
   10,152.81x = 133,665,515.72
5. Step 5: Solve for x
   x = 133,665,515.72/10,152.81
6. Step 6: Final answer
   x = 13,165.37