Finding the Fourth Proportional to 22,473.72, 31,013.70 and 12,914.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,473.72 : 31,013.70 = 12,914.28 : x
2. Step 2: Convert to fraction form
   22,473.72/31,013.70 = 12,914.28/x
3. Step 3: Cross multiply
   22,473.72x = 31,013.70 × 12,914.28
4. Step 4: Simplify right side
   22,473.72x = 400,519,605.64
5. Step 5: Solve for x
   x = 400,519,605.64/22,473.72
6. Step 6: Final answer
   x = 17,821.69