Finding the Fourth Proportional to 12,711.25, 17,541.22 and 7,045.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,711.25 : 17,541.22 = 7,045.90 : x
2. Step 2: Convert to fraction form
   12,711.25/17,541.22 = 7,045.90/x
3. Step 3: Cross multiply
   12,711.25x = 17,541.22 × 7,045.90
4. Step 4: Simplify right side
   12,711.25x = 123,593,668.32
5. Step 5: Solve for x
   x = 123,593,668.32/12,711.25
6. Step 6: Final answer
   x = 9,723.17