Finding the Fourth Proportional to 9,996.94, 14,978.99 and 3,419.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,996.94 : 14,978.99 = 3,419.54 : x
2. Step 2: Convert to fraction form
   9,996.94/14,978.99 = 3,419.54/x
3. Step 3: Cross multiply
   9,996.94x = 14,978.99 × 3,419.54
4. Step 4: Simplify right side
   9,996.94x = 51,221,189.12
5. Step 5: Solve for x
   x = 51,221,189.12/9,996.94
6. Step 6: Final answer
   x = 5,123.69