Finding the Fourth Proportional to 5,416.74, 8,104.89 and 3,860.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,416.74 : 8,104.89 = 3,860.34 : x
2. Step 2: Convert to fraction form
   5,416.74/8,104.89 = 3,860.34/x
3. Step 3: Cross multiply
   5,416.74x = 8,104.89 × 3,860.34
4. Step 4: Simplify right side
   5,416.74x = 31,287,631.06
5. Step 5: Solve for x
   x = 31,287,631.06/5,416.74
6. Step 6: Final answer
   x = 5,776.10