Finding the Fourth Proportional to 10,969.62, 16,461.72 and 10,240.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,969.62 : 16,461.72 = 10,240.62 : x
2. Step 2: Convert to fraction form
   10,969.62/16,461.72 = 10,240.62/x
3. Step 3: Cross multiply
   10,969.62x = 16,461.72 × 10,240.62
4. Step 4: Simplify right side
   10,969.62x = 168,578,219.07
5. Step 5: Solve for x
   x = 168,578,219.07/10,969.62
6. Step 6: Final answer
   x = 15,367.74