Finding the Fourth Proportional to 21,397.78, 32,096.76 and 5,815.54

Step by Step Solution

1. Step 1: Write the proportion equation
   21,397.78 : 32,096.76 = 5,815.54 : x
2. Step 2: Convert to fraction form
   21,397.78/32,096.76 = 5,815.54/x
3. Step 3: Cross multiply
   21,397.78x = 32,096.76 × 5,815.54
4. Step 4: Simplify right side
   21,397.78x = 186,659,991.65
5. Step 5: Solve for x
   x = 186,659,991.65/21,397.78
6. Step 6: Final answer
   x = 8,723.33