Finding the Fourth Proportional to 3,870.96, 5,809.68 and 3,508.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.96 : 5,809.68 = 3,508.08 : x
2. Step 2: Convert to fraction form
   3,870.96/5,809.68 = 3,508.08/x
3. Step 3: Cross multiply
   3,870.96x = 5,809.68 × 3,508.08
4. Step 4: Simplify right side
   3,870.96x = 20,380,822.21
5. Step 5: Solve for x
   x = 20,380,822.21/3,870.96
6. Step 6: Final answer
   x = 5,265.06