Finding the Fourth Proportional to 16,686.96, 25,004.52 and 10,518

Step by Step Solution

1. Step 1: Write the proportion equation
   16,686.96 : 25,004.52 = 10,518 : x
2. Step 2: Convert to fraction form
   16,686.96/25,004.52 = 10,518/x
3. Step 3: Cross multiply
   16,686.96x = 25,004.52 × 10,518
4. Step 4: Simplify right side
   16,686.96x = 262,997,541.36
5. Step 5: Solve for x
   x = 262,997,541.36/16,686.96
6. Step 6: Final answer
   x = 15,760.66