Finding the Fourth Proportional to 9,369.98, 12,930.59 and 5,391.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,369.98 : 12,930.59 = 5,391.01 : x
2. Step 2: Convert to fraction form
   9,369.98/12,930.59 = 5,391.01/x
3. Step 3: Cross multiply
   9,369.98x = 12,930.59 × 5,391.01
4. Step 4: Simplify right side
   9,369.98x = 69,708,945.37
5. Step 5: Solve for x
   x = 69,708,945.37/9,369.98
6. Step 6: Final answer
   x = 7,439.60