Finding the Fourth Proportional to 8,146.43, 12,210.29 and 3,459.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,146.43 : 12,210.29 = 3,459.57 : x
2. Step 2: Convert to fraction form
   8,146.43/12,210.29 = 3,459.57/x
3. Step 3: Cross multiply
   8,146.43x = 12,210.29 × 3,459.57
4. Step 4: Simplify right side
   8,146.43x = 42,242,352.98
5. Step 5: Solve for x
   x = 42,242,352.98/8,146.43
6. Step 6: Final answer
   x = 5,185.38