Finding the Fourth Proportional to 5,275.09, 7,912.71 and 1,379.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,275.09 : 7,912.71 = 1,379.50 : x
2. Step 2: Convert to fraction form
   5,275.09/7,912.71 = 1,379.50/x
3. Step 3: Cross multiply
   5,275.09x = 7,912.71 × 1,379.50
4. Step 4: Simplify right side
   5,275.09x = 10,915,583.45
5. Step 5: Solve for x
   x = 10,915,583.45/5,275.09
6. Step 6: Final answer
   x = 2,069.27