Finding the Fourth Proportional to 14,086.34, 21,087.42 and 8,522.87

Step by Step Solution

1. Step 1: Write the proportion equation
   14,086.34 : 21,087.42 = 8,522.87 : x
2. Step 2: Convert to fraction form
   14,086.34/21,087.42 = 8,522.87/x
3. Step 3: Cross multiply
   14,086.34x = 21,087.42 × 8,522.87
4. Step 4: Simplify right side
   14,086.34x = 179,725,339.30
5. Step 5: Solve for x
   x = 179,725,339.30/14,086.34
6. Step 6: Final answer
   x = 12,758.84