Finding the Fourth Proportional to 15,684.65, 21,644.72 and 8,514.71

Step by Step Solution

1. Step 1: Write the proportion equation
   15,684.65 : 21,644.72 = 8,514.71 : x
2. Step 2: Convert to fraction form
   15,684.65/21,644.72 = 8,514.71/x
3. Step 3: Cross multiply
   15,684.65x = 21,644.72 × 8,514.71
4. Step 4: Simplify right side
   15,684.65x = 184,298,513.83
5. Step 5: Solve for x
   x = 184,298,513.83/15,684.65
6. Step 6: Final answer
   x = 11,750.25