Finding the Fourth Proportional to 16,816.69, 23,206.58 and 9,647.81

Step by Step Solution

1. Step 1: Write the proportion equation
   16,816.69 : 23,206.58 = 9,647.81 : x
2. Step 2: Convert to fraction form
   16,816.69/23,206.58 = 9,647.81/x
3. Step 3: Cross multiply
   16,816.69x = 23,206.58 × 9,647.81
4. Step 4: Simplify right side
   16,816.69x = 223,892,633.52
5. Step 5: Solve for x
   x = 223,892,633.52/16,816.69
6. Step 6: Final answer
   x = 13,313.71