Finding the Fourth Proportional to 16,382.72, 22,601.76 and 9,211

Step by Step Solution

1. Step 1: Write the proportion equation
   16,382.72 : 22,601.76 = 9,211 : x
2. Step 2: Convert to fraction form
   16,382.72/22,601.76 = 9,211/x
3. Step 3: Cross multiply
   16,382.72x = 22,601.76 × 9,211
4. Step 4: Simplify right side
   16,382.72x = 208,184,811.36
5. Step 5: Solve for x
   x = 208,184,811.36/16,382.72
6. Step 6: Final answer
   x = 12,707.59