Finding the Fourth Proportional to 5,282.46, 7,923.42 and 1,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,282.46 : 7,923.42 = 1,386.72 : x
2. Step 2: Convert to fraction form
   5,282.46/7,923.42 = 1,386.72/x
3. Step 3: Cross multiply
   5,282.46x = 7,923.42 × 1,386.72
4. Step 4: Simplify right side
   5,282.46x = 10,987,564.98
5. Step 5: Solve for x
   x = 10,987,564.98/5,282.46
6. Step 6: Final answer
   x = 2,080.01