Finding the Fourth Proportional to 6,891.45, 9,510.20 and 3,747.63

Step by Step Solution

1. Step 1: Write the proportion equation
   6,891.45 : 9,510.20 = 3,747.63 : x
2. Step 2: Convert to fraction form
   6,891.45/9,510.20 = 3,747.63/x
3. Step 3: Cross multiply
   6,891.45x = 9,510.20 × 3,747.63
4. Step 4: Simplify right side
   6,891.45x = 35,640,710.83
5. Step 5: Solve for x
   x = 35,640,710.83/6,891.45
6. Step 6: Final answer
   x = 5,171.73