Finding the Fourth Proportional to 9,388.26, 12,956.00 and 5,139.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,388.26 : 12,956.00 = 5,139.41 : x
2. Step 2: Convert to fraction form
   9,388.26/12,956.00 = 5,139.41/x
3. Step 3: Cross multiply
   9,388.26x = 12,956.00 × 5,139.41
4. Step 4: Simplify right side
   9,388.26x = 66,586,105.48
5. Step 5: Solve for x
   x = 66,586,105.48/9,388.26
6. Step 6: Final answer
   x = 7,092.49