Finding the Fourth Proportional to 13,709.72, 18,918.27 and 8,043.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,709.72 : 18,918.27 = 8,043.86 : x
2. Step 2: Convert to fraction form
   13,709.72/18,918.27 = 8,043.86/x
3. Step 3: Cross multiply
   13,709.72x = 18,918.27 × 8,043.86
4. Step 4: Simplify right side
   13,709.72x = 152,175,962.62
5. Step 5: Solve for x
   x = 152,175,962.62/13,709.72
6. Step 6: Final answer
   x = 11,099.86