Finding the Fourth Proportional to 10,553.43, 15,832.49 and 3,979.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,553.43 : 15,832.49 = 3,979.68 : x
2. Step 2: Convert to fraction form
   10,553.43/15,832.49 = 3,979.68/x
3. Step 3: Cross multiply
   10,553.43x = 15,832.49 × 3,979.68
4. Step 4: Simplify right side
   10,553.43x = 63,008,223.90
5. Step 5: Solve for x
   x = 63,008,223.90/10,553.43
6. Step 6: Final answer
   x = 5,970.40