Finding the Fourth Proportional to 39,588.56, 54,632.37 and 21,683.42

Step by Step Solution

1. Step 1: Write the proportion equation
   39,588.56 : 54,632.37 = 21,683.42 : x
2. Step 2: Convert to fraction form
   39,588.56/54,632.37 = 21,683.42/x
3. Step 3: Cross multiply
   39,588.56x = 54,632.37 × 21,683.42
4. Step 4: Simplify right side
   39,588.56x = 1,184,616,624.31
5. Step 5: Solve for x
   x = 1,184,616,624.31/39,588.56
6. Step 6: Final answer
   x = 29,923.21