Finding the Fourth Proportional to 8,399.86, 12,600.96 and 3,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,399.86 : 12,600.96 = 3,719.50 : x
2. Step 2: Convert to fraction form
   8,399.86/12,600.96 = 3,719.50/x
3. Step 3: Cross multiply
   8,399.86x = 12,600.96 × 3,719.50
4. Step 4: Simplify right side
   8,399.86x = 46,869,270.72
5. Step 5: Solve for x
   x = 46,869,270.72/8,399.86
6. Step 6: Final answer
   x = 5,579.77