Finding the Fourth Proportional to 16,215.84, 22,376.52 and 9,144

Step by Step Solution

1. Step 1: Write the proportion equation
   16,215.84 : 22,376.52 = 9,144 : x
2. Step 2: Convert to fraction form
   16,215.84/22,376.52 = 9,144/x
3. Step 3: Cross multiply
   16,215.84x = 22,376.52 × 9,144
4. Step 4: Simplify right side
   16,215.84x = 204,610,898.88
5. Step 5: Solve for x
   x = 204,610,898.88/16,215.84
6. Step 6: Final answer
   x = 12,617.96