Finding the Fourth Proportional to 6,891.86, 9,510.69 and 3,748.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,891.86 : 9,510.69 = 3,748.05 : x
2. Step 2: Convert to fraction form
   6,891.86/9,510.69 = 3,748.05/x
3. Step 3: Cross multiply
   6,891.86x = 9,510.69 × 3,748.05
4. Step 4: Simplify right side
   6,891.86x = 35,646,541.65
5. Step 5: Solve for x
   x = 35,646,541.65/6,891.86
6. Step 6: Final answer
   x = 5,172.27