Finding the Fourth Proportional to 10,728.32, 16,088.43 and 5,179.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,728.32 : 16,088.43 = 5,179.82 : x
2. Step 2: Convert to fraction form
   10,728.32/16,088.43 = 5,179.82/x
3. Step 3: Cross multiply
   10,728.32x = 16,088.43 × 5,179.82
4. Step 4: Simplify right side
   10,728.32x = 83,335,171.48
5. Step 5: Solve for x
   x = 83,335,171.48/10,728.32
6. Step 6: Final answer
   x = 7,767.77