Finding the Fourth Proportional to 11,783.51, 16,260.83 and 6,478.29

Step by Step Solution

1. Step 1: Write the proportion equation
   11,783.51 : 16,260.83 = 6,478.29 : x
2. Step 2: Convert to fraction form
   11,783.51/16,260.83 = 6,478.29/x
3. Step 3: Cross multiply
   11,783.51x = 16,260.83 × 6,478.29
4. Step 4: Simplify right side
   11,783.51x = 105,342,364.28
5. Step 5: Solve for x
   x = 105,342,364.28/11,783.51
6. Step 6: Final answer
   x = 8,939.81