Finding the Fourth Proportional to 16,974.61, 25,401.72 and 12,521.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,974.61 : 25,401.72 = 12,521.74 : x
2. Step 2: Convert to fraction form
   16,974.61/25,401.72 = 12,521.74/x
3. Step 3: Cross multiply
   16,974.61x = 25,401.72 × 12,521.74
4. Step 4: Simplify right side
   16,974.61x = 318,073,733.39
5. Step 5: Solve for x
   x = 318,073,733.39/16,974.61
6. Step 6: Final answer
   x = 18,738.21