Finding the Fourth Proportional to 11,783.31, 16,245.87 and 9,650.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,783.31 : 16,245.87 = 9,650.99 : x
2. Step 2: Convert to fraction form
   11,783.31/16,245.87 = 9,650.99/x
3. Step 3: Cross multiply
   11,783.31x = 16,245.87 × 9,650.99
4. Step 4: Simplify right side
   11,783.31x = 156,788,647.68
5. Step 5: Solve for x
   x = 156,788,647.68/11,783.31
6. Step 6: Final answer
   x = 13,305.99