Finding the Fourth Proportional to 8,145.71, 12,219.47 and 2,597.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145.71 : 12,219.47 = 2,597.12 : x
2. Step 2: Convert to fraction form
   8,145.71/12,219.47 = 2,597.12/x
3. Step 3: Cross multiply
   8,145.71x = 12,219.47 × 2,597.12
4. Step 4: Simplify right side
   8,145.71x = 31,735,429.93
5. Step 5: Solve for x
   x = 31,735,429.93/8,145.71
6. Step 6: Final answer
   x = 3,895.97