Finding the Fourth Proportional to 11,998.50, 18,004.23 and 5,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,998.50 : 18,004.23 = 5,842.50 : x
2. Step 2: Convert to fraction form
   11,998.50/18,004.23 = 5,842.50/x
3. Step 3: Cross multiply
   11,998.50x = 18,004.23 × 5,842.50
4. Step 4: Simplify right side
   11,998.50x = 105,189,713.78
5. Step 5: Solve for x
   x = 105,189,713.78/11,998.50
6. Step 6: Final answer
   x = 8,766.91