Finding the Fourth Proportional to 21,397.89, 32,096.91 and 5,815.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,397.89 : 32,096.91 = 5,815.51 : x
2. Step 2: Convert to fraction form
   21,397.89/32,096.91 = 5,815.51/x
3. Step 3: Cross multiply
   21,397.89x = 32,096.91 × 5,815.51
4. Step 4: Simplify right side
   21,397.89x = 186,659,901.07
5. Step 5: Solve for x
   x = 186,659,901.07/21,397.89
6. Step 6: Final answer
   x = 8,723.29