Finding the Fourth Proportional to 17,696.72, 24,420.12 and 10,142.96

Step by Step Solution

1. Step 1: Write the proportion equation
   17,696.72 : 24,420.12 = 10,142.96 : x
2. Step 2: Convert to fraction form
   17,696.72/24,420.12 = 10,142.96/x
3. Step 3: Cross multiply
   17,696.72x = 24,420.12 × 10,142.96
4. Step 4: Simplify right side
   17,696.72x = 247,692,300.36
5. Step 5: Solve for x
   x = 247,692,300.36/17,696.72
6. Step 6: Final answer
   x = 13,996.51