Finding the Fourth Proportional to 39,707.39, 54,796.82 and 21,804

Step by Step Solution

1. Step 1: Write the proportion equation
   39,707.39 : 54,796.82 = 21,804 : x
2. Step 2: Convert to fraction form
   39,707.39/54,796.82 = 21,804/x
3. Step 3: Cross multiply
   39,707.39x = 54,796.82 × 21,804
4. Step 4: Simplify right side
   39,707.39x = 1,194,789,754.26
5. Step 5: Solve for x
   x = 1,194,789,754.26/39,707.39
6. Step 6: Final answer
   x = 30,089.86