Finding the Fourth Proportional to 39,925.09, 55,096.97 and 22,020.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,925.09 : 55,096.97 = 22,020.72 : x
2. Step 2: Convert to fraction form
   39,925.09/55,096.97 = 22,020.72/x
3. Step 3: Cross multiply
   39,925.09x = 55,096.97 × 22,020.72
4. Step 4: Simplify right side
   39,925.09x = 1,213,274,949.22
5. Step 5: Solve for x
   x = 1,213,274,949.22/39,925.09
6. Step 6: Final answer
   x = 30,388.78