Finding the Fourth Proportional to 22,519.74, 31,075.59 and 12,447.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,519.74 : 31,075.59 = 12,447.61 : x
2. Step 2: Convert to fraction form
   22,519.74/31,075.59 = 12,447.61/x
3. Step 3: Cross multiply
   22,519.74x = 31,075.59 × 12,447.61
4. Step 4: Simplify right side
   22,519.74x = 386,816,824.84
5. Step 5: Solve for x
   x = 386,816,824.84/22,519.74
6. Step 6: Final answer
   x = 17,176.79