Finding the Fourth Proportional to 10,903.30, 16,356.15 and 3,979.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,903.30 : 16,356.15 = 3,979.30 : x
2. Step 2: Convert to fraction form
   10,903.30/16,356.15 = 3,979.30/x
3. Step 3: Cross multiply
   10,903.30x = 16,356.15 × 3,979.30
4. Step 4: Simplify right side
   10,903.30x = 65,086,027.70
5. Step 5: Solve for x
   x = 65,086,027.70/10,903.30
6. Step 6: Final answer
   x = 5,969.39