Finding the Fourth Proportional to 11,980.24, 16,540.72 and 7,795.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,980.24 : 16,540.72 = 7,795.60 : x
2. Step 2: Convert to fraction form
   11,980.24/16,540.72 = 7,795.60/x
3. Step 3: Cross multiply
   11,980.24x = 16,540.72 × 7,795.60
4. Step 4: Simplify right side
   11,980.24x = 128,944,836.83
5. Step 5: Solve for x
   x = 128,944,836.83/11,980.24
6. Step 6: Final answer
   x = 10,763.13