Finding the Fourth Proportional to 11,839.11, 16,335.67 and 7,123.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,839.11 : 16,335.67 = 7,123.69 : x
2. Step 2: Convert to fraction form
   11,839.11/16,335.67 = 7,123.69/x
3. Step 3: Cross multiply
   11,839.11x = 16,335.67 × 7,123.69
4. Step 4: Simplify right side
   11,839.11x = 116,370,249.02
5. Step 5: Solve for x
   x = 116,370,249.02/11,839.11
6. Step 6: Final answer
   x = 9,829.31