Finding the Fourth Proportional to 12,522.99, 17,281.68 and 7,145.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,522.99 : 17,281.68 = 7,145.43 : x
2. Step 2: Convert to fraction form
   12,522.99/17,281.68 = 7,145.43/x
3. Step 3: Cross multiply
   12,522.99x = 17,281.68 × 7,145.43
4. Step 4: Simplify right side
   12,522.99x = 123,485,034.72
5. Step 5: Solve for x
   x = 123,485,034.72/12,522.99
6. Step 6: Final answer
   x = 9,860.67