Finding the Fourth Proportional to 10,355.81, 14,287.88 and 5,879.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,355.81 : 14,287.88 = 5,879.48 : x
2. Step 2: Convert to fraction form
   10,355.81/14,287.88 = 5,879.48/x
3. Step 3: Cross multiply
   10,355.81x = 14,287.88 × 5,879.48
4. Step 4: Simplify right side
   10,355.81x = 84,005,275.31
5. Step 5: Solve for x
   x = 84,005,275.31/10,355.81
6. Step 6: Final answer
   x = 8,111.90