Finding the Fourth Proportional to 16,704.30, 23,052.15 and 9,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,704.30 : 23,052.15 = 9,150.78 : x
2. Step 2: Convert to fraction form
   16,704.30/23,052.15 = 9,150.78/x
3. Step 3: Cross multiply
   16,704.30x = 23,052.15 × 9,150.78
4. Step 4: Simplify right side
   16,704.30x = 210,945,153.18
5. Step 5: Solve for x
   x = 210,945,153.18/16,704.30
6. Step 6: Final answer
   x = 12,628.19