Finding the Fourth Proportional to 12,561.65, 17,330.15 and 7,526.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,561.65 : 17,330.15 = 7,526.09 : x
2. Step 2: Convert to fraction form
   12,561.65/17,330.15 = 7,526.09/x
3. Step 3: Cross multiply
   12,561.65x = 17,330.15 × 7,526.09
4. Step 4: Simplify right side
   12,561.65x = 130,428,144.33
5. Step 5: Solve for x
   x = 130,428,144.33/12,561.65
6. Step 6: Final answer
   x = 10,383.04