Finding the Fourth Proportional to 13,922.72, 20,877.52 and 8,080.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,922.72 : 20,877.52 = 8,080.96 : x
2. Step 2: Convert to fraction form
   13,922.72/20,877.52 = 8,080.96/x
3. Step 3: Cross multiply
   13,922.72x = 20,877.52 × 8,080.96
4. Step 4: Simplify right side
   13,922.72x = 168,710,404.02
5. Step 5: Solve for x
   x = 168,710,404.02/13,922.72
6. Step 6: Final answer
   x = 12,117.63