Finding the Fourth Proportional to 22,504.39, 31,055.12 and 12,943.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,504.39 : 31,055.12 = 12,943.55 : x
2. Step 2: Convert to fraction form
   22,504.39/31,055.12 = 12,943.55/x
3. Step 3: Cross multiply
   22,504.39x = 31,055.12 × 12,943.55
4. Step 4: Simplify right side
   22,504.39x = 401,963,498.48
5. Step 5: Solve for x
   x = 401,963,498.48/22,504.39
6. Step 6: Final answer
   x = 17,861.56