Finding the Fourth Proportional to 22,479.58, 31,021.27 and 12,408.04

Step by Step Solution

1. Step 1: Write the proportion equation
   22,479.58 : 31,021.27 = 12,408.04 : x
2. Step 2: Convert to fraction form
   22,479.58/31,021.27 = 12,408.04/x
3. Step 3: Cross multiply
   22,479.58x = 31,021.27 × 12,408.04
4. Step 4: Simplify right side
   22,479.58x = 384,913,159.01
5. Step 5: Solve for x
   x = 384,913,159.01/22,479.58
6. Step 6: Final answer
   x = 17,122.79