Finding the Fourth Proportional to 4,817.89, 6,650.53 and 3,139.71

Step by Step Solution

1. Step 1: Write the proportion equation
   4,817.89 : 6,650.53 = 3,139.71 : x
2. Step 2: Convert to fraction form
   4,817.89/6,650.53 = 3,139.71/x
3. Step 3: Cross multiply
   4,817.89x = 6,650.53 × 3,139.71
4. Step 4: Simplify right side
   4,817.89x = 20,880,749.00
5. Step 5: Solve for x
   x = 20,880,749.00/4,817.89
6. Step 6: Final answer
   x = 4,334.00