Finding the Fourth Proportional to 16,842.34, 23,240.64 and 9,288.17

Step by Step Solution

1. Step 1: Write the proportion equation
   16,842.34 : 23,240.64 = 9,288.17 : x
2. Step 2: Convert to fraction form
   16,842.34/23,240.64 = 9,288.17/x
3. Step 3: Cross multiply
   16,842.34x = 23,240.64 × 9,288.17
4. Step 4: Simplify right side
   16,842.34x = 215,863,015.23
5. Step 5: Solve for x
   x = 215,863,015.23/16,842.34
6. Step 6: Final answer
   x = 12,816.69