Finding the Fourth Proportional to 9,900.37, 13,662.48 and 5,424.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900.37 : 13,662.48 = 5,424.27 : x
2. Step 2: Convert to fraction form
   9,900.37/13,662.48 = 5,424.27/x
3. Step 3: Cross multiply
   9,900.37x = 13,662.48 × 5,424.27
4. Step 4: Simplify right side
   9,900.37x = 74,108,980.39
5. Step 5: Solve for x
   x = 74,108,980.39/9,900.37
6. Step 6: Final answer
   x = 7,485.48