Finding the Fourth Proportional to 23,173.09, 31,978.72 and 12,562.69

Step by Step Solution

1. Step 1: Write the proportion equation
   23,173.09 : 31,978.72 = 12,562.69 : x
2. Step 2: Convert to fraction form
   23,173.09/31,978.72 = 12,562.69/x
3. Step 3: Cross multiply
   23,173.09x = 31,978.72 × 12,562.69
4. Step 4: Simplify right side
   23,173.09x = 401,738,745.96
5. Step 5: Solve for x
   x = 401,738,745.96/23,173.09
6. Step 6: Final answer
   x = 17,336.43