Finding the Fourth Proportional to 9,185.82, 12,671.73 and 5,406.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,185.82 : 12,671.73 = 5,406.54 : x
2. Step 2: Convert to fraction form
   9,185.82/12,671.73 = 5,406.54/x
3. Step 3: Cross multiply
   9,185.82x = 12,671.73 × 5,406.54
4. Step 4: Simplify right side
   9,185.82x = 68,510,215.11
5. Step 5: Solve for x
   x = 68,510,215.11/9,185.82
6. Step 6: Final answer
   x = 7,458.26