Finding the Fourth Proportional to 4,973.69, 6,861.39 and 3,180.71

Step by Step Solution

1. Step 1: Write the proportion equation
   4,973.69 : 6,861.39 = 3,180.71 : x
2. Step 2: Convert to fraction form
   4,973.69/6,861.39 = 3,180.71/x
3. Step 3: Cross multiply
   4,973.69x = 6,861.39 × 3,180.71
4. Step 4: Simplify right side
   4,973.69x = 21,824,057.48
5. Step 5: Solve for x
   x = 21,824,057.48/4,973.69
6. Step 6: Final answer
   x = 4,387.91