Finding the Fourth Proportional to 12,089.88, 16,654.25 and 10,291.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,089.88 : 16,654.25 = 10,291.60 : x
2. Step 2: Convert to fraction form
   12,089.88/16,654.25 = 10,291.60/x
3. Step 3: Cross multiply
   12,089.88x = 16,654.25 × 10,291.60
4. Step 4: Simplify right side
   12,089.88x = 171,398,906.90
5. Step 5: Solve for x
   x = 171,398,906.90/12,089.88
6. Step 6: Final answer
   x = 14,177.06