Finding the Fourth Proportional to 8,384.69, 12,579.21 and 3,705.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,384.69 : 12,579.21 = 3,705.72 : x
2. Step 2: Convert to fraction form
   8,384.69/12,579.21 = 3,705.72/x
3. Step 3: Cross multiply
   8,384.69x = 12,579.21 × 3,705.72
4. Step 4: Simplify right side
   8,384.69x = 46,615,016.18
5. Step 5: Solve for x
   x = 46,615,016.18/8,384.69
6. Step 6: Final answer
   x = 5,559.54