Finding the Fourth Proportional to 14,196.63, 21,185.57 and 12,468.90

Step by Step Solution

1. Step 1: Write the proportion equation
   14,196.63 : 21,185.57 = 12,468.90 : x
2. Step 2: Convert to fraction form
   14,196.63/21,185.57 = 12,468.90/x
3. Step 3: Cross multiply
   14,196.63x = 21,185.57 × 12,468.90
4. Step 4: Simplify right side
   14,196.63x = 264,160,761.57
5. Step 5: Solve for x
   x = 264,160,761.57/14,196.63
6. Step 6: Final answer
   x = 18,607.29