Finding the Fourth Proportional to 11,728.88, 16,185.86 and 6,424.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,728.88 : 16,185.86 = 6,424.04 : x
2. Step 2: Convert to fraction form
   11,728.88/16,185.86 = 6,424.04/x
3. Step 3: Cross multiply
   11,728.88x = 16,185.86 × 6,424.04
4. Step 4: Simplify right side
   11,728.88x = 103,978,612.07
5. Step 5: Solve for x
   x = 103,978,612.07/11,728.88
6. Step 6: Final answer
   x = 8,865.18