Finding the Fourth Proportional to 5,113.69, 7,059.17 and 3,976.79

Step by Step Solution

1. Step 1: Write the proportion equation
   5,113.69 : 7,059.17 = 3,976.79 : x
2. Step 2: Convert to fraction form
   5,113.69/7,059.17 = 3,976.79/x
3. Step 3: Cross multiply
   5,113.69x = 7,059.17 × 3,976.79
4. Step 4: Simplify right side
   5,113.69x = 28,072,808.79
5. Step 5: Solve for x
   x = 28,072,808.79/5,113.69
6. Step 6: Final answer
   x = 5,489.74