Finding the Fourth Proportional to 39,164.72, 54,046.94 and 21,259.34

Step by Step Solution

1. Step 1: Write the proportion equation
   39,164.72 : 54,046.94 = 21,259.34 : x
2. Step 2: Convert to fraction form
   39,164.72/54,046.94 = 21,259.34/x
3. Step 3: Cross multiply
   39,164.72x = 54,046.94 × 21,259.34
4. Step 4: Simplify right side
   39,164.72x = 1,149,001,896.89
5. Step 5: Solve for x
   x = 1,149,001,896.89/39,164.72
6. Step 6: Final answer
   x = 29,337.68