Finding the Fourth Proportional to 12,379.82, 17,085.22 and 6,791.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,379.82 : 17,085.22 = 6,791.90 : x
2. Step 2: Convert to fraction form
   12,379.82/17,085.22 = 6,791.90/x
3. Step 3: Cross multiply
   12,379.82x = 17,085.22 × 6,791.90
4. Step 4: Simplify right side
   12,379.82x = 116,041,105.72
5. Step 5: Solve for x
   x = 116,041,105.72/12,379.82
6. Step 6: Final answer
   x = 9,373.41