Finding the Fourth Proportional to 6,891.91, 9,510.98 and 3,748.09

Step by Step Solution

1. Step 1: Write the proportion equation
   6,891.91 : 9,510.98 = 3,748.09 : x
2. Step 2: Convert to fraction form
   6,891.91/9,510.98 = 3,748.09/x
3. Step 3: Cross multiply
   6,891.91x = 9,510.98 × 3,748.09
4. Step 4: Simplify right side
   6,891.91x = 35,648,009.03
5. Step 5: Solve for x
   x = 35,648,009.03/6,891.91
6. Step 6: Final answer
   x = 5,172.44