Finding the Fourth Proportional to 16,872.83, 25,312.32 and 8,443.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872.83 : 25,312.32 = 8,443.74 : x
2. Step 2: Convert to fraction form
   16,872.83/25,312.32 = 8,443.74/x
3. Step 3: Cross multiply
   16,872.83x = 25,312.32 × 8,443.74
4. Step 4: Simplify right side
   16,872.83x = 213,730,648.88
5. Step 5: Solve for x
   x = 213,730,648.88/16,872.83
6. Step 6: Final answer
   x = 12,667.15