Finding the Fourth Proportional to 15,758.42, 21,745.58 and 8,684.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,758.42 : 21,745.58 = 8,684.82 : x
2. Step 2: Convert to fraction form
   15,758.42/21,745.58 = 8,684.82/x
3. Step 3: Cross multiply
   15,758.42x = 21,745.58 × 8,684.82
4. Step 4: Simplify right side
   15,758.42x = 188,856,404.67
5. Step 5: Solve for x
   x = 188,856,404.67/15,758.42
6. Step 6: Final answer
   x = 11,984.48