Finding the Fourth Proportional to 7,266.78, 10,905.59 and 2,825.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,266.78 : 10,905.59 = 2,825.15 : x
2. Step 2: Convert to fraction form
   7,266.78/10,905.59 = 2,825.15/x
3. Step 3: Cross multiply
   7,266.78x = 10,905.59 × 2,825.15
4. Step 4: Simplify right side
   7,266.78x = 30,809,880.12
5. Step 5: Solve for x
   x = 30,809,880.12/7,266.78
6. Step 6: Final answer
   x = 4,239.83