Finding the Fourth Proportional to 8,462.07, 12,689.61 and 3,196.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,462.07 : 12,689.61 = 3,196.18 : x
2. Step 2: Convert to fraction form
   8,462.07/12,689.61 = 3,196.18/x
3. Step 3: Cross multiply
   8,462.07x = 12,689.61 × 3,196.18
4. Step 4: Simplify right side
   8,462.07x = 40,558,261.71
5. Step 5: Solve for x
   x = 40,558,261.71/8,462.07
6. Step 6: Final answer
   x = 4,792.95