Finding the Fourth Proportional to 21,452.88, 29,599.89 and 12,495

Step by Step Solution

1. Step 1: Write the proportion equation
   21,452.88 : 29,599.89 = 12,495 : x
2. Step 2: Convert to fraction form
   21,452.88/29,599.89 = 12,495/x
3. Step 3: Cross multiply
   21,452.88x = 29,599.89 × 12,495
4. Step 4: Simplify right side
   21,452.88x = 369,850,625.55
5. Step 5: Solve for x
   x = 369,850,625.55/21,452.88
6. Step 6: Final answer
   x = 17,240.14