Finding the Fourth Proportional to 11,338.72, 17,016.93 and 7,853.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,338.72 : 17,016.93 = 7,853.15 : x
2. Step 2: Convert to fraction form
   11,338.72/17,016.93 = 7,853.15/x
3. Step 3: Cross multiply
   11,338.72x = 17,016.93 × 7,853.15
4. Step 4: Simplify right side
   11,338.72x = 133,636,546.37
5. Step 5: Solve for x
   x = 133,636,546.37/11,338.72
6. Step 6: Final answer
   x = 11,785.86