Finding the Fourth Proportional to 22,814.61, 31,483.83 and 12,743.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,814.61 : 31,483.83 = 12,743.20 : x
2. Step 2: Convert to fraction form
   22,814.61/31,483.83 = 12,743.20/x
3. Step 3: Cross multiply
   22,814.61x = 31,483.83 × 12,743.20
4. Step 4: Simplify right side
   22,814.61x = 401,204,616.89
5. Step 5: Solve for x
   x = 401,204,616.89/22,814.61
6. Step 6: Final answer
   x = 17,585.42