Finding the Fourth Proportional to 9,638.03, 13,298.75 and 5,389.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,638.03 : 13,298.75 = 5,389.18 : x
2. Step 2: Convert to fraction form
   9,638.03/13,298.75 = 5,389.18/x
3. Step 3: Cross multiply
   9,638.03x = 13,298.75 × 5,389.18
4. Step 4: Simplify right side
   9,638.03x = 71,669,264.09
5. Step 5: Solve for x
   x = 71,669,264.09/9,638.03
6. Step 6: Final answer
   x = 7,436.09