Finding the Fourth Proportional to 16,842.36, 23,243.52 and 9,288.70

Step by Step Solution

1. Step 1: Write the proportion equation
   16,842.36 : 23,243.52 = 9,288.70 : x
2. Step 2: Convert to fraction form
   16,842.36/23,243.52 = 9,288.70/x
3. Step 3: Cross multiply
   16,842.36x = 23,243.52 × 9,288.70
4. Step 4: Simplify right side
   16,842.36x = 215,902,084.22
5. Step 5: Solve for x
   x = 215,902,084.22/16,842.36
6. Step 6: Final answer
   x = 12,819.00