Finding the Fourth Proportional to 8,501.63, 12,753.59 and 2,658.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,501.63 : 12,753.59 = 2,658.69 : x
2. Step 2: Convert to fraction form
   8,501.63/12,753.59 = 2,658.69/x
3. Step 3: Cross multiply
   8,501.63x = 12,753.59 × 2,658.69
4. Step 4: Simplify right side
   8,501.63x = 33,907,828.90
5. Step 5: Solve for x
   x = 33,907,828.90/8,501.63
6. Step 6: Final answer
   x = 3,988.39