Finding the Fourth Proportional to 23,171.03, 31,976.15 and 12,560.57

Step by Step Solution

1. Step 1: Write the proportion equation
   23,171.03 : 31,976.15 = 12,560.57 : x
2. Step 2: Convert to fraction form
   23,171.03/31,976.15 = 12,560.57/x
3. Step 3: Cross multiply
   23,171.03x = 31,976.15 × 12,560.57
4. Step 4: Simplify right side
   23,171.03x = 401,638,670.41
5. Step 5: Solve for x
   x = 401,638,670.41/23,171.03
6. Step 6: Final answer
   x = 17,333.66