Finding the Fourth Proportional to 7,200.02, 10,801.38 and 2,817.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.02 : 10,801.38 = 2,817.20 : x
2. Step 2: Convert to fraction form
   7,200.02/10,801.38 = 2,817.20/x
3. Step 3: Cross multiply
   7,200.02x = 10,801.38 × 2,817.20
4. Step 4: Simplify right side
   7,200.02x = 30,429,593.73
5. Step 5: Solve for x
   x = 30,429,593.73/7,200.02
6. Step 6: Final answer
   x = 4,226.32