Finding the Fourth Proportional to 11,945.16, 16,485.98 and 8,599.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.16 : 16,485.98 = 8,599.05 : x
2. Step 2: Convert to fraction form
   11,945.16/16,485.98 = 8,599.05/x
3. Step 3: Cross multiply
   11,945.16x = 16,485.98 × 8,599.05
4. Step 4: Simplify right side
   11,945.16x = 141,763,723.32
5. Step 5: Solve for x
   x = 141,763,723.32/11,945.16
6. Step 6: Final answer
   x = 11,867.88