Finding the Fourth Proportional to 21,751.74, 32,620.73 and 13,419.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,751.74 : 32,620.73 = 13,419.27 : x
2. Step 2: Convert to fraction form
   21,751.74/32,620.73 = 13,419.27/x
3. Step 3: Cross multiply
   21,751.74x = 32,620.73 × 13,419.27
4. Step 4: Simplify right side
   21,751.74x = 437,746,316.37
5. Step 5: Solve for x
   x = 437,746,316.37/21,751.74
6. Step 6: Final answer
   x = 20,124.66