Finding the Fourth Proportional to 8,156.25, 12,235.28 and 2,608.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,156.25 : 12,235.28 = 2,608.29 : x
2. Step 2: Convert to fraction form
   8,156.25/12,235.28 = 2,608.29/x
3. Step 3: Cross multiply
   8,156.25x = 12,235.28 × 2,608.29
4. Step 4: Simplify right side
   8,156.25x = 31,913,145.43
5. Step 5: Solve for x
   x = 31,913,145.43/8,156.25
6. Step 6: Final answer
   x = 3,912.72