Finding the Fourth Proportional to 39,900.65, 55,062.23 and 21,751.58

Step by Step Solution

1. Step 1: Write the proportion equation
   39,900.65 : 55,062.23 = 21,751.58 : x
2. Step 2: Convert to fraction form
   39,900.65/55,062.23 = 21,751.58/x
3. Step 3: Cross multiply
   39,900.65x = 55,062.23 × 21,751.58
4. Step 4: Simplify right side
   39,900.65x = 1,197,690,279.89
5. Step 5: Solve for x
   x = 1,197,690,279.89/39,900.65
6. Step 6: Final answer
   x = 30,016.81