Finding the Fourth Proportional to 12,561.68, 17,323.82 and 9,382.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,561.68 : 17,323.82 = 9,382.69 : x
2. Step 2: Convert to fraction form
   12,561.68/17,323.82 = 9,382.69/x
3. Step 3: Cross multiply
   12,561.68x = 17,323.82 × 9,382.69
4. Step 4: Simplify right side
   12,561.68x = 162,543,997.93
5. Step 5: Solve for x
   x = 162,543,997.93/12,561.68
6. Step 6: Final answer
   x = 12,939.67