Finding the Fourth Proportional to 7,200.14, 10,799.24 and 2,820.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.14 : 10,799.24 = 2,820.72 : x
2. Step 2: Convert to fraction form
   7,200.14/10,799.24 = 2,820.72/x
3. Step 3: Cross multiply
   7,200.14x = 10,799.24 × 2,820.72
4. Step 4: Simplify right side
   7,200.14x = 30,461,632.25
5. Step 5: Solve for x
   x = 30,461,632.25/7,200.14
6. Step 6: Final answer
   x = 4,230.70