Finding the Fourth Proportional to 11,783.98, 17,640.89 and 7,611.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,783.98 : 17,640.89 = 7,611.82 : x
2. Step 2: Convert to fraction form
   11,783.98/17,640.89 = 7,611.82/x
3. Step 3: Cross multiply
   11,783.98x = 17,640.89 × 7,611.82
4. Step 4: Simplify right side
   11,783.98x = 134,279,324.93
5. Step 5: Solve for x
   x = 134,279,324.93/11,783.98
6. Step 6: Final answer
   x = 11,395.07