Finding the Fourth Proportional to 12,823.31, 19,236.05 and 3,589.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,823.31 : 19,236.05 = 3,589.31 : x
2. Step 2: Convert to fraction form
   12,823.31/19,236.05 = 3,589.31/x
3. Step 3: Cross multiply
   12,823.31x = 19,236.05 × 3,589.31
4. Step 4: Simplify right side
   12,823.31x = 69,044,190.23
5. Step 5: Solve for x
   x = 69,044,190.23/12,823.31
6. Step 6: Final answer
   x = 5,384.27