Finding the Fourth Proportional to 17,142.72, 23,668.20 and 11,484.78

Step by Step Solution

1. Step 1: Write the proportion equation
   17,142.72 : 23,668.20 = 11,484.78 : x
2. Step 2: Convert to fraction form
   17,142.72/23,668.20 = 11,484.78/x
3. Step 3: Cross multiply
   17,142.72x = 23,668.20 × 11,484.78
4. Step 4: Simplify right side
   17,142.72x = 271,824,070.00
5. Step 5: Solve for x
   x = 271,824,070.00/17,142.72
6. Step 6: Final answer
   x = 15,856.53