Finding the Fourth Proportional to 4,896.94, 7,329.91 and 3,139.59

Step by Step Solution

1. Step 1: Write the proportion equation
   4,896.94 : 7,329.91 = 3,139.59 : x
2. Step 2: Convert to fraction form
   4,896.94/7,329.91 = 3,139.59/x
3. Step 3: Cross multiply
   4,896.94x = 7,329.91 × 3,139.59
4. Step 4: Simplify right side
   4,896.94x = 23,012,904.29
5. Step 5: Solve for x
   x = 23,012,904.29/4,896.94
6. Step 6: Final answer
   x = 4,699.45