Finding the Fourth Proportional to 5,376.69, 7,419.89 and 2,986.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,376.69 : 7,419.89 = 2,986.71 : x
2. Step 2: Convert to fraction form
   5,376.69/7,419.89 = 2,986.71/x
3. Step 3: Cross multiply
   5,376.69x = 7,419.89 × 2,986.71
4. Step 4: Simplify right side
   5,376.69x = 22,161,044.73
5. Step 5: Solve for x
   x = 22,161,044.73/5,376.69
6. Step 6: Final answer
   x = 4,121.69