Finding the Fourth Proportional to 16,698.78, 23,039.10 and 9,624.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,698.78 : 23,039.10 = 9,624.24 : x
2. Step 2: Convert to fraction form
   16,698.78/23,039.10 = 9,624.24/x
3. Step 3: Cross multiply
   16,698.78x = 23,039.10 × 9,624.24
4. Step 4: Simplify right side
   16,698.78x = 221,733,827.78
5. Step 5: Solve for x
   x = 221,733,827.78/16,698.78
6. Step 6: Final answer
   x = 13,278.44