Finding the Fourth Proportional to 9,838.42, 13,583.83 and 7,958.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,838.42 : 13,583.83 = 7,958.29 : x
2. Step 2: Convert to fraction form
   9,838.42/13,583.83 = 7,958.29/x
3. Step 3: Cross multiply
   9,838.42x = 13,583.83 × 7,958.29
4. Step 4: Simplify right side
   9,838.42x = 108,104,053.86
5. Step 5: Solve for x
   x = 108,104,053.86/9,838.42
6. Step 6: Final answer
   x = 10,987.94