Finding the Fourth Proportional to 22,569.72, 31,147.98 and 13,012.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,569.72 : 31,147.98 = 13,012.68 : x
2. Step 2: Convert to fraction form
   22,569.72/31,147.98 = 13,012.68/x
3. Step 3: Cross multiply
   22,569.72x = 31,147.98 × 13,012.68
4. Step 4: Simplify right side
   22,569.72x = 405,318,696.39
5. Step 5: Solve for x
   x = 405,318,696.39/22,569.72
6. Step 6: Final answer
   x = 17,958.52