Finding the Fourth Proportional to 22,431.32, 30,950.25 and 12,994.41

Step by Step Solution

1. Step 1: Write the proportion equation
   22,431.32 : 30,950.25 = 12,994.41 : x
2. Step 2: Convert to fraction form
   22,431.32/30,950.25 = 12,994.41/x
3. Step 3: Cross multiply
   22,431.32x = 30,950.25 × 12,994.41
4. Step 4: Simplify right side
   22,431.32x = 402,180,238.10
5. Step 5: Solve for x
   x = 402,180,238.10/22,431.32
6. Step 6: Final answer
   x = 17,929.41