Finding the Fourth Proportional to 8,709.48, 13,059.72 and 2,865.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,709.48 : 13,059.72 = 2,865.30 : x
2. Step 2: Convert to fraction form
   8,709.48/13,059.72 = 2,865.30/x
3. Step 3: Cross multiply
   8,709.48x = 13,059.72 × 2,865.30
4. Step 4: Simplify right side
   8,709.48x = 37,420,015.72
5. Step 5: Solve for x
   x = 37,420,015.72/8,709.48
6. Step 6: Final answer
   x = 4,296.47