Finding the Fourth Proportional to 8,743.48, 12,068.27 and 5,389.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,743.48 : 12,068.27 = 5,389.05 : x
2. Step 2: Convert to fraction form
   8,743.48/12,068.27 = 5,389.05/x
3. Step 3: Cross multiply
   8,743.48x = 12,068.27 × 5,389.05
4. Step 4: Simplify right side
   8,743.48x = 65,036,510.44
5. Step 5: Solve for x
   x = 65,036,510.44/8,743.48
6. Step 6: Final answer
   x = 7,438.29