Finding the Fourth Proportional to 16,215.72, 22,376.73 and 9,409.22

Step by Step Solution

1. Step 1: Write the proportion equation
   16,215.72 : 22,376.73 = 9,409.22 : x
2. Step 2: Convert to fraction form
   16,215.72/22,376.73 = 9,409.22/x
3. Step 3: Cross multiply
   16,215.72x = 22,376.73 × 9,409.22
4. Step 4: Simplify right side
   16,215.72x = 210,547,416.52
5. Step 5: Solve for x
   x = 210,547,416.52/16,215.72
6. Step 6: Final answer
   x = 12,984.15