Finding the Fourth Proportional to 8,610.72, 12,916.32 and 3,064.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,610.72 : 12,916.32 = 3,064.48 : x
2. Step 2: Convert to fraction form
   8,610.72/12,916.32 = 3,064.48/x
3. Step 3: Cross multiply
   8,610.72x = 12,916.32 × 3,064.48
4. Step 4: Simplify right side
   8,610.72x = 39,581,804.31
5. Step 5: Solve for x
   x = 39,581,804.31/8,610.72
6. Step 6: Final answer
   x = 4,596.81