Finding the Fourth Proportional to 21,977.04, 30,323.52 and 13,020.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,977.04 : 30,323.52 = 13,020.06 : x
2. Step 2: Convert to fraction form
   21,977.04/30,323.52 = 13,020.06/x
3. Step 3: Cross multiply
   21,977.04x = 30,323.52 × 13,020.06
4. Step 4: Simplify right side
   21,977.04x = 394,814,049.81
5. Step 5: Solve for x
   x = 394,814,049.81/21,977.04
6. Step 6: Final answer
   x = 17,964.84