Finding the Fourth Proportional to 21,735.34, 30,008.01 and 20,395.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,735.34 : 30,008.01 = 20,395.06 : x
2. Step 2: Convert to fraction form
   21,735.34/30,008.01 = 20,395.06/x
3. Step 3: Cross multiply
   21,735.34x = 30,008.01 × 20,395.06
4. Step 4: Simplify right side
   21,735.34x = 612,015,164.43
5. Step 5: Solve for x
   x = 612,015,164.43/21,735.34
6. Step 6: Final answer
   x = 28,157.61