Finding the Fourth Proportional to 14,574.23, 20,111.59 and 8,603.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,574.23 : 20,111.59 = 8,603.72 : x
2. Step 2: Convert to fraction form
   14,574.23/20,111.59 = 8,603.72/x
3. Step 3: Cross multiply
   14,574.23x = 20,111.59 × 8,603.72
4. Step 4: Simplify right side
   14,574.23x = 173,034,474.73
5. Step 5: Solve for x
   x = 173,034,474.73/14,574.23
6. Step 6: Final answer
   x = 11,872.63