Finding the Fourth Proportional to 39,667.38, 54,739.17 and 21,762

Step by Step Solution

1. Step 1: Write the proportion equation
   39,667.38 : 54,739.17 = 21,762 : x
2. Step 2: Convert to fraction form
   39,667.38/54,739.17 = 21,762/x
3. Step 3: Cross multiply
   39,667.38x = 54,739.17 × 21,762
4. Step 4: Simplify right side
   39,667.38x = 1,191,233,817.54
5. Step 5: Solve for x
   x = 1,191,233,817.54/39,667.38
6. Step 6: Final answer
   x = 30,030.56