Finding the Fourth Proportional to 14,111.20, 21,171.21 and 8,495.02

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.20 : 21,171.21 = 8,495.02 : x
2. Step 2: Convert to fraction form
   14,111.20/21,171.21 = 8,495.02/x
3. Step 3: Cross multiply
   14,111.20x = 21,171.21 × 8,495.02
4. Step 4: Simplify right side
   14,111.20x = 179,849,852.37
5. Step 5: Solve for x
   x = 179,849,852.37/14,111.20
6. Step 6: Final answer
   x = 12,745.18