Finding the Fourth Proportional to 9,940.85, 13,718.12 and 5,403.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,940.85 : 13,718.12 = 5,403.33 : x
2. Step 2: Convert to fraction form
   9,940.85/13,718.12 = 5,403.33/x
3. Step 3: Cross multiply
   9,940.85x = 13,718.12 × 5,403.33
4. Step 4: Simplify right side
   9,940.85x = 74,123,529.34
5. Step 5: Solve for x
   x = 74,123,529.34/9,940.85
6. Step 6: Final answer
   x = 7,456.46