Finding the Fourth Proportional to 8,859.42, 13,289.00 and 2,285.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,859.42 : 13,289.00 = 2,285.55 : x
2. Step 2: Convert to fraction form
   8,859.42/13,289.00 = 2,285.55/x
3. Step 3: Cross multiply
   8,859.42x = 13,289.00 × 2,285.55
4. Step 4: Simplify right side
   8,859.42x = 30,372,662.52
5. Step 5: Solve for x
   x = 30,372,662.52/8,859.42
6. Step 6: Final answer
   x = 3,428.29