Finding the Fourth Proportional to 16,508.76, 24,667.86 and 12,479.64

Step by Step Solution

1. Step 1: Write the proportion equation
   16,508.76 : 24,667.86 = 12,479.64 : x
2. Step 2: Convert to fraction form
   16,508.76/24,667.86 = 12,479.64/x
3. Step 3: Cross multiply
   16,508.76x = 24,667.86 × 12,479.64
4. Step 4: Simplify right side
   16,508.76x = 307,846,012.37
5. Step 5: Solve for x
   x = 307,846,012.37/16,508.76
6. Step 6: Final answer
   x = 18,647.43