Finding the Fourth Proportional to 7,145.91, 10,718.91 and 3,250.62

Step by Step Solution

1. Step 1: Write the proportion equation
   7,145.91 : 10,718.91 = 3,250.62 : x
2. Step 2: Convert to fraction form
   7,145.91/10,718.91 = 3,250.62/x
3. Step 3: Cross multiply
   7,145.91x = 10,718.91 × 3,250.62
4. Step 4: Simplify right side
   7,145.91x = 34,843,103.22
5. Step 5: Solve for x
   x = 34,843,103.22/7,145.91
6. Step 6: Final answer
   x = 4,875.95