Finding the Fourth Proportional to 6,891.69, 9,510.53 and 3,747.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,891.69 : 9,510.53 = 3,747.86 : x
2. Step 2: Convert to fraction form
   6,891.69/9,510.53 = 3,747.86/x
3. Step 3: Cross multiply
   6,891.69x = 9,510.53 × 3,747.86
4. Step 4: Simplify right side
   6,891.69x = 35,644,068.67
5. Step 5: Solve for x
   x = 35,644,068.67/6,891.69
6. Step 6: Final answer
   x = 5,172.04