Finding the Fourth Proportional to 39,667.92, 54,743.22 and 21,763.68

Step by Step Solution

1. Step 1: Write the proportion equation
   39,667.92 : 54,743.22 = 21,763.68 : x
2. Step 2: Convert to fraction form
   39,667.92/54,743.22 = 21,763.68/x
3. Step 3: Cross multiply
   39,667.92x = 54,743.22 × 21,763.68
4. Step 4: Simplify right side
   39,667.92x = 1,191,413,922.25
5. Step 5: Solve for x
   x = 1,191,413,922.25/39,667.92
6. Step 6: Final answer
   x = 30,034.70