Finding the Fourth Proportional to 39,627.34, 54,685.41 and 21,722.31

Step by Step Solution

1. Step 1: Write the proportion equation
   39,627.34 : 54,685.41 = 21,722.31 : x
2. Step 2: Convert to fraction form
   39,627.34/54,685.41 = 21,722.31/x
3. Step 3: Cross multiply
   39,627.34x = 54,685.41 × 21,722.31
4. Step 4: Simplify right side
   39,627.34x = 1,187,893,428.50
5. Step 5: Solve for x
   x = 1,187,893,428.50/39,627.34
6. Step 6: Final answer
   x = 29,976.61