Finding the Fourth Proportional to 7,196.20, 10,799.70 and 7,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,196.20 : 10,799.70 = 7,162.72 : x
2. Step 2: Convert to fraction form
   7,196.20/10,799.70 = 7,162.72/x
3. Step 3: Cross multiply
   7,196.20x = 10,799.70 × 7,162.72
4. Step 4: Simplify right side
   7,196.20x = 77,355,227.18
5. Step 5: Solve for x
   x = 77,355,227.18/7,196.20
6. Step 6: Final answer
   x = 10,749.45