Finding the Fourth Proportional to 9,558.38, 13,190.71 and 5,366.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,558.38 : 13,190.71 = 5,366.54 : x
2. Step 2: Convert to fraction form
   9,558.38/13,190.71 = 5,366.54/x
3. Step 3: Cross multiply
   9,558.38x = 13,190.71 × 5,366.54
4. Step 4: Simplify right side
   9,558.38x = 70,788,406.89
5. Step 5: Solve for x
   x = 70,788,406.89/9,558.38
6. Step 6: Final answer
   x = 7,405.90