Finding the Fourth Proportional to 10,982.66, 15,145.68 and 7,209.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,982.66 : 15,145.68 = 7,209.10 : x
2. Step 2: Convert to fraction form
   10,982.66/15,145.68 = 7,209.10/x
3. Step 3: Cross multiply
   10,982.66x = 15,145.68 × 7,209.10
4. Step 4: Simplify right side
   10,982.66x = 109,186,721.69
5. Step 5: Solve for x
   x = 109,186,721.69/10,982.66
6. Step 6: Final answer
   x = 9,941.74