Finding the Fourth Proportional to 22,561.06, 31,133.25 and 12,488.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,561.06 : 31,133.25 = 12,488.79 : x
2. Step 2: Convert to fraction form
   22,561.06/31,133.25 = 12,488.79/x
3. Step 3: Cross multiply
   22,561.06x = 31,133.25 × 12,488.79
4. Step 4: Simplify right side
   22,561.06x = 388,816,504.52
5. Step 5: Solve for x
   x = 388,816,504.52/22,561.06
6. Step 6: Final answer
   x = 17,233.97