Finding the Fourth Proportional to 8,085.64, 12,131.42 and 3,406.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,085.64 : 12,131.42 = 3,406.82 : x
2. Step 2: Convert to fraction form
   8,085.64/12,131.42 = 3,406.82/x
3. Step 3: Cross multiply
   8,085.64x = 12,131.42 × 3,406.82
4. Step 4: Simplify right side
   8,085.64x = 41,329,564.28
5. Step 5: Solve for x
   x = 41,329,564.28/8,085.64
6. Step 6: Final answer
   x = 5,111.48