Finding the Fourth Proportional to 9,855.48, 13,600.50 and 5,379.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,855.48 : 13,600.50 = 5,379.14 : x
2. Step 2: Convert to fraction form
   9,855.48/13,600.50 = 5,379.14/x
3. Step 3: Cross multiply
   9,855.48x = 13,600.50 × 5,379.14
4. Step 4: Simplify right side
   9,855.48x = 73,158,993.57
5. Step 5: Solve for x
   x = 73,158,993.57/9,855.48
6. Step 6: Final answer
   x = 7,423.18