Finding the Fourth Proportional to 22,479.41, 31,022.10 and 12,408

Step by Step Solution

1. Step 1: Write the proportion equation
   22,479.41 : 31,022.10 = 12,408 : x
2. Step 2: Convert to fraction form
   22,479.41/31,022.10 = 12,408/x
3. Step 3: Cross multiply
   22,479.41x = 31,022.10 × 12,408
4. Step 4: Simplify right side
   22,479.41x = 384,922,216.80
5. Step 5: Solve for x
   x = 384,922,216.80/22,479.41
6. Step 6: Final answer
   x = 17,123.33