Finding the Fourth Proportional to 16,685.72, 23,025.28 and 9,514.63

Step by Step Solution

1. Step 1: Write the proportion equation
   16,685.72 : 23,025.28 = 9,514.63 : x
2. Step 2: Convert to fraction form
   16,685.72/23,025.28 = 9,514.63/x
3. Step 3: Cross multiply
   16,685.72x = 23,025.28 × 9,514.63
4. Step 4: Simplify right side
   16,685.72x = 219,077,019.85
5. Step 5: Solve for x
   x = 219,077,019.85/16,685.72
6. Step 6: Final answer
   x = 13,129.61