Finding the Fourth Proportional to 11,608.25, 16,019.67 and 7,129.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,608.25 : 16,019.67 = 7,129.46 : x
2. Step 2: Convert to fraction form
   11,608.25/16,019.67 = 7,129.46/x
3. Step 3: Cross multiply
   11,608.25x = 16,019.67 × 7,129.46
4. Step 4: Simplify right side
   11,608.25x = 114,211,596.48
5. Step 5: Solve for x
   x = 114,211,596.48/11,608.25
6. Step 6: Final answer
   x = 9,838.83