Finding the Fourth Proportional to 6,891.89, 9,510.89 and 3,748.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,891.89 : 9,510.89 = 3,748.08 : x
2. Step 2: Convert to fraction form
   6,891.89/9,510.89 = 3,748.08/x
3. Step 3: Cross multiply
   6,891.89x = 9,510.89 × 3,748.08
4. Step 4: Simplify right side
   6,891.89x = 35,647,540.02
5. Step 5: Solve for x
   x = 35,647,540.02/6,891.89
6. Step 6: Final answer
   x = 5,172.39