Finding the Fourth Proportional to 11,911.37, 16,433.42 and 7,431.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,911.37 : 16,433.42 = 7,431.48 : x
2. Step 2: Convert to fraction form
   11,911.37/16,433.42 = 7,431.48/x
3. Step 3: Cross multiply
   11,911.37x = 16,433.42 × 7,431.48
4. Step 4: Simplify right side
   11,911.37x = 122,124,594.90
5. Step 5: Solve for x
   x = 122,124,594.90/11,911.37
6. Step 6: Final answer
   x = 10,252.78