Finding the Fourth Proportional to 8,513.02, 12,773.20 and 3,249.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513.02 : 12,773.20 = 3,249.61 : x
2. Step 2: Convert to fraction form
   8,513.02/12,773.20 = 3,249.61/x
3. Step 3: Cross multiply
   8,513.02x = 12,773.20 × 3,249.61
4. Step 4: Simplify right side
   8,513.02x = 41,507,929.55
5. Step 5: Solve for x
   x = 41,507,929.55/8,513.02
6. Step 6: Final answer
   x = 4,875.82