Finding the Fourth Proportional to 22,521.45, 31,079.27 and 12,449.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,521.45 : 31,079.27 = 12,449.68 : x
2. Step 2: Convert to fraction form
   22,521.45/31,079.27 = 12,449.68/x
3. Step 3: Cross multiply
   22,521.45x = 31,079.27 × 12,449.68
4. Step 4: Simplify right side
   22,521.45x = 386,926,919.56
5. Step 5: Solve for x
   x = 386,926,919.56/22,521.45
6. Step 6: Final answer
   x = 17,180.37