Finding the Fourth Proportional to 7,145.30, 10,716.32 and 3,194.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,145.30 : 10,716.32 = 3,194.48 : x
2. Step 2: Convert to fraction form
   7,145.30/10,716.32 = 3,194.48/x
3. Step 3: Cross multiply
   7,145.30x = 10,716.32 × 3,194.48
4. Step 4: Simplify right side
   7,145.30x = 34,233,069.91
5. Step 5: Solve for x
   x = 34,233,069.91/7,145.30
6. Step 6: Final answer
   x = 4,790.99