Finding the Fourth Proportional to 3,709.12, 5,116.18 and 2,380.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.12 : 5,116.18 = 2,380.72 : x
2. Step 2: Convert to fraction form
   3,709.12/5,116.18 = 2,380.72/x
3. Step 3: Cross multiply
   3,709.12x = 5,116.18 × 2,380.72
4. Step 4: Simplify right side
   3,709.12x = 12,180,192.05
5. Step 5: Solve for x
   x = 12,180,192.05/3,709.12
6. Step 6: Final answer
   x = 3,283.85