Finding the Fourth Proportional to 16,260.52, 22,443.20 and 9,191.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,260.52 : 22,443.20 = 9,191.05 : x
2. Step 2: Convert to fraction form
   16,260.52/22,443.20 = 9,191.05/x
3. Step 3: Cross multiply
   16,260.52x = 22,443.20 × 9,191.05
4. Step 4: Simplify right side
   16,260.52x = 206,276,573.36
5. Step 5: Solve for x
   x = 206,276,573.36/16,260.52
6. Step 6: Final answer
   x = 12,685.73