Finding the Fourth Proportional to 12,846.53, 17,728.54 and 7,181.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,846.53 : 17,728.54 = 7,181.89 : x
2. Step 2: Convert to fraction form
   12,846.53/17,728.54 = 7,181.89/x
3. Step 3: Cross multiply
   12,846.53x = 17,728.54 × 7,181.89
4. Step 4: Simplify right side
   12,846.53x = 127,324,361.86
5. Step 5: Solve for x
   x = 127,324,361.86/12,846.53
6. Step 6: Final answer
   x = 9,911.19