Finding the Fourth Proportional to 10,989.71, 16,493.42 and 5,726.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989.71 : 16,493.42 = 5,726.33 : x
2. Step 2: Convert to fraction form
   10,989.71/16,493.42 = 5,726.33/x
3. Step 3: Cross multiply
   10,989.71x = 16,493.42 × 5,726.33
4. Step 4: Simplify right side
   10,989.71x = 94,446,654.65
5. Step 5: Solve for x
   x = 94,446,654.65/10,989.71
6. Step 6: Final answer
   x = 8,594.10