Finding the Fourth Proportional to 12,017.91, 16,561.08 and 9,188.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,017.91 : 16,561.08 = 9,188.49 : x
2. Step 2: Convert to fraction form
   12,017.91/16,561.08 = 9,188.49/x
3. Step 3: Cross multiply
   12,017.91x = 16,561.08 × 9,188.49
4. Step 4: Simplify right side
   12,017.91x = 152,171,317.97
5. Step 5: Solve for x
   x = 152,171,317.97/12,017.91
6. Step 6: Final answer
   x = 12,662.05