Finding the Fourth Proportional to 11,783.09, 16,260.72 and 6,478.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,783.09 : 16,260.72 = 6,478.25 : x
2. Step 2: Convert to fraction form
   11,783.09/16,260.72 = 6,478.25/x
3. Step 3: Cross multiply
   11,783.09x = 16,260.72 × 6,478.25
4. Step 4: Simplify right side
   11,783.09x = 105,341,009.34
5. Step 5: Solve for x
   x = 105,341,009.34/11,783.09
6. Step 6: Final answer
   x = 8,940.02