Finding the Fourth Proportional to 11,970.54, 16,518.78 and 6,665.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,970.54 : 16,518.78 = 6,665.82 : x
2. Step 2: Convert to fraction form
   11,970.54/16,518.78 = 6,665.82/x
3. Step 3: Cross multiply
   11,970.54x = 16,518.78 × 6,665.82
4. Step 4: Simplify right side
   11,970.54x = 110,111,214.10
5. Step 5: Solve for x
   x = 110,111,214.10/11,970.54
6. Step 6: Final answer
   x = 9,198.52