Finding the Fourth Proportional to 21,574.96, 32,356.46 and 13,665.71

Step by Step Solution

1. Step 1: Write the proportion equation
   21,574.96 : 32,356.46 = 13,665.71 : x
2. Step 2: Convert to fraction form
   21,574.96/32,356.46 = 13,665.71/x
3. Step 3: Cross multiply
   21,574.96x = 32,356.46 × 13,665.71
4. Step 4: Simplify right side
   21,574.96x = 442,174,114.04
5. Step 5: Solve for x
   x = 442,174,114.04/21,574.96
6. Step 6: Final answer
   x = 20,494.78