Finding the Fourth Proportional to 14,804.78, 20,429.42 and 8,517.56

Step by Step Solution

1. Step 1: Write the proportion equation
   14,804.78 : 20,429.42 = 8,517.56 : x
2. Step 2: Convert to fraction form
   14,804.78/20,429.42 = 8,517.56/x
3. Step 3: Cross multiply
   14,804.78x = 20,429.42 × 8,517.56
4. Step 4: Simplify right side
   14,804.78x = 174,008,810.62
5. Step 5: Solve for x
   x = 174,008,810.62/14,804.78
6. Step 6: Final answer
   x = 11,753.56