Finding the Fourth Proportional to 21,590.50, 32,386.83 and 20,454.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,590.50 : 32,386.83 = 20,454.34 : x
2. Step 2: Convert to fraction form
   21,590.50/32,386.83 = 20,454.34/x
3. Step 3: Cross multiply
   21,590.50x = 32,386.83 × 20,454.34
4. Step 4: Simplify right side
   21,590.50x = 662,451,232.34
5. Step 5: Solve for x
   x = 662,451,232.34/21,590.50
6. Step 6: Final answer
   x = 30,682.53