Finding the Fourth Proportional to 16,677, 24,982.56 and 12,521.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,677 : 24,982.56 = 12,521.88 : x
2. Step 2: Convert to fraction form
   16,677/24,982.56 = 12,521.88/x
3. Step 3: Cross multiply
   16,677x = 24,982.56 × 12,521.88
4. Step 4: Simplify right side
   16,677x = 312,828,618.41
5. Step 5: Solve for x
   x = 312,828,618.41/16,677
6. Step 6: Final answer
   x = 18,758.09