Finding the Fourth Proportional to 16,971.91, 23,420.18 and 10,253.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,971.91 : 23,420.18 = 10,253.57 : x
2. Step 2: Convert to fraction form
   16,971.91/23,420.18 = 10,253.57/x
3. Step 3: Cross multiply
   16,971.91x = 23,420.18 × 10,253.57
4. Step 4: Simplify right side
   16,971.91x = 240,140,370.86
5. Step 5: Solve for x
   x = 240,140,370.86/16,971.91
6. Step 6: Final answer
   x = 14,149.28