Finding the Fourth Proportional to 10,591.97, 15,868.59 and 4,959.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,591.97 : 15,868.59 = 4,959.30 : x
2. Step 2: Convert to fraction form
   10,591.97/15,868.59 = 4,959.30/x
3. Step 3: Cross multiply
   10,591.97x = 15,868.59 × 4,959.30
4. Step 4: Simplify right side
   10,591.97x = 78,697,139.30
5. Step 5: Solve for x
   x = 78,697,139.30/10,591.97
6. Step 6: Final answer
   x = 7,429.89