Finding the Fourth Proportional to 10,997.94, 15,173.17 and 7,223.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.94 : 15,173.17 = 7,223.15 : x
2. Step 2: Convert to fraction form
   10,997.94/15,173.17 = 7,223.15/x
3. Step 3: Cross multiply
   10,997.94x = 15,173.17 × 7,223.15
4. Step 4: Simplify right side
   10,997.94x = 109,598,036.70
5. Step 5: Solve for x
   x = 109,598,036.70/10,997.94
6. Step 6: Final answer
   x = 9,965.33