Finding the Fourth Proportional to 21,835.20, 30,108.78 and 14,749.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,835.20 : 30,108.78 = 14,749.32 : x
2. Step 2: Convert to fraction form
   21,835.20/30,108.78 = 14,749.32/x
3. Step 3: Cross multiply
   21,835.20x = 30,108.78 × 14,749.32
4. Step 4: Simplify right side
   21,835.20x = 444,084,031.03
5. Step 5: Solve for x
   x = 444,084,031.03/21,835.20
6. Step 6: Final answer
   x = 20,337.99