Finding the Fourth Proportional to 12,591.10, 18,961.59 and 10,967.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.10 : 18,961.59 = 10,967.25 : x
2. Step 2: Convert to fraction form
   12,591.10/18,961.59 = 10,967.25/x
3. Step 3: Cross multiply
   12,591.10x = 18,961.59 × 10,967.25
4. Step 4: Simplify right side
   12,591.10x = 207,956,443.09
5. Step 5: Solve for x
   x = 207,956,443.09/12,591.10
6. Step 6: Final answer
   x = 16,516.15