Finding the Fourth Proportional to 12,846.89, 17,729.09 and 7,181.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,846.89 : 17,729.09 = 7,181.45 : x
2. Step 2: Convert to fraction form
   12,846.89/17,729.09 = 7,181.45/x
3. Step 3: Cross multiply
   12,846.89x = 17,729.09 × 7,181.45
4. Step 4: Simplify right side
   12,846.89x = 127,320,448.83
5. Step 5: Solve for x
   x = 127,320,448.83/12,846.89
6. Step 6: Final answer
   x = 9,910.61