Finding the Fourth Proportional to 12,234.72, 16,853.04 and 9,870.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,234.72 : 16,853.04 = 9,870.24 : x
2. Step 2: Convert to fraction form
   12,234.72/16,853.04 = 9,870.24/x
3. Step 3: Cross multiply
   12,234.72x = 16,853.04 × 9,870.24
4. Step 4: Simplify right side
   12,234.72x = 166,343,549.53
5. Step 5: Solve for x
   x = 166,343,549.53/12,234.72
6. Step 6: Final answer
   x = 13,596.02