Finding the Fourth Proportional to 7,215.87, 10,825.72 and 2,285.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,215.87 : 10,825.72 = 2,285.59 : x
2. Step 2: Convert to fraction form
   7,215.87/10,825.72 = 2,285.59/x
3. Step 3: Cross multiply
   7,215.87x = 10,825.72 × 2,285.59
4. Step 4: Simplify right side
   7,215.87x = 24,743,145.95
5. Step 5: Solve for x
   x = 24,743,145.95/7,215.87
6. Step 6: Final answer
   x = 3,428.99