Finding the Fourth Proportional to 7,843.91, 11,762.72 and 3,458.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,843.91 : 11,762.72 = 3,458.25 : x
2. Step 2: Convert to fraction form
   7,843.91/11,762.72 = 3,458.25/x
3. Step 3: Cross multiply
   7,843.91x = 11,762.72 × 3,458.25
4. Step 4: Simplify right side
   7,843.91x = 40,678,426.44
5. Step 5: Solve for x
   x = 40,678,426.44/7,843.91
6. Step 6: Final answer
   x = 5,185.99