Finding the Fourth Proportional to 8,406.50, 12,601.20 and 3,478.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,406.50 : 12,601.20 = 3,478.82 : x
2. Step 2: Convert to fraction form
   8,406.50/12,601.20 = 3,478.82/x
3. Step 3: Cross multiply
   8,406.50x = 12,601.20 × 3,478.82
4. Step 4: Simplify right side
   8,406.50x = 43,837,306.58
5. Step 5: Solve for x
   x = 43,837,306.58/8,406.50
6. Step 6: Final answer
   x = 5,214.69