Finding the Fourth Proportional to 4,870.82, 6,717.32 and 3,191.62

Step by Step Solution

1. Step 1: Write the proportion equation
   4,870.82 : 6,717.32 = 3,191.62 : x
2. Step 2: Convert to fraction form
   4,870.82/6,717.32 = 3,191.62/x
3. Step 3: Cross multiply
   4,870.82x = 6,717.32 × 3,191.62
4. Step 4: Simplify right side
   4,870.82x = 21,439,155.22
5. Step 5: Solve for x
   x = 21,439,155.22/4,870.82
6. Step 6: Final answer
   x = 4,401.55