Finding the Fourth Proportional to 39,667.10, 54,740.12 and 21,762.27

Step by Step Solution

1. Step 1: Write the proportion equation
   39,667.10 : 54,740.12 = 21,762.27 : x
2. Step 2: Convert to fraction form
   39,667.10/54,740.12 = 21,762.27/x
3. Step 3: Cross multiply
   39,667.10x = 54,740.12 × 21,762.27
4. Step 4: Simplify right side
   39,667.10x = 1,191,269,162.46
5. Step 5: Solve for x
   x = 1,191,269,162.46/39,667.10
6. Step 6: Final answer
   x = 30,031.67