Finding the Fourth Proportional to 13,211.97, 18,233.27 and 7,837.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,211.97 : 18,233.27 = 7,837.59 : x
2. Step 2: Convert to fraction form
   13,211.97/18,233.27 = 7,837.59/x
3. Step 3: Cross multiply
   13,211.97x = 18,233.27 × 7,837.59
4. Step 4: Simplify right side
   13,211.97x = 142,904,854.23
5. Step 5: Solve for x
   x = 142,904,854.23/13,211.97
6. Step 6: Final answer
   x = 10,816.32