Finding the Fourth Proportional to 8,105.94, 12,154.86 and 3,719.70

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.94 : 12,154.86 = 3,719.70 : x
2. Step 2: Convert to fraction form
   8,105.94/12,154.86 = 3,719.70/x
3. Step 3: Cross multiply
   8,105.94x = 12,154.86 × 3,719.70
4. Step 4: Simplify right side
   8,105.94x = 45,212,432.74
5. Step 5: Solve for x
   x = 45,212,432.74/8,105.94
6. Step 6: Final answer
   x = 5,577.69