Finding the Fourth Proportional to 13,710.72, 20,466.81 and 12,049.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,710.72 : 20,466.81 = 12,049.98 : x
2. Step 2: Convert to fraction form
   13,710.72/20,466.81 = 12,049.98/x
3. Step 3: Cross multiply
   13,710.72x = 20,466.81 × 12,049.98
4. Step 4: Simplify right side
   13,710.72x = 246,624,651.16
5. Step 5: Solve for x
   x = 246,624,651.16/13,710.72
6. Step 6: Final answer
   x = 17,987.72