Finding the Fourth Proportional to 9,378.06, 12,943.25 and 5,398.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,378.06 : 12,943.25 = 5,398.34 : x
2. Step 2: Convert to fraction form
   9,378.06/12,943.25 = 5,398.34/x
3. Step 3: Cross multiply
   9,378.06x = 12,943.25 × 5,398.34
4. Step 4: Simplify right side
   9,378.06x = 69,871,972.50
5. Step 5: Solve for x
   x = 69,871,972.50/9,378.06
6. Step 6: Final answer
   x = 7,450.58