Finding the Fourth Proportional to 8,412.24, 12,619.83 and 3,479.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,412.24 : 12,619.83 = 3,479.12 : x
2. Step 2: Convert to fraction form
   8,412.24/12,619.83 = 3,479.12/x
3. Step 3: Cross multiply
   8,412.24x = 12,619.83 × 3,479.12
4. Step 4: Simplify right side
   8,412.24x = 43,905,839.85
5. Step 5: Solve for x
   x = 43,905,839.85/8,412.24
6. Step 6: Final answer
   x = 5,219.28