Finding the Fourth Proportional to 14,142.69, 19,519.80 and 8,173.53

Step by Step Solution

1. Step 1: Write the proportion equation
   14,142.69 : 19,519.80 = 8,173.53 : x
2. Step 2: Convert to fraction form
   14,142.69/19,519.80 = 8,173.53/x
3. Step 3: Cross multiply
   14,142.69x = 19,519.80 × 8,173.53
4. Step 4: Simplify right side
   14,142.69x = 159,545,670.89
5. Step 5: Solve for x
   x = 159,545,670.89/14,142.69
6. Step 6: Final answer
   x = 11,281.14