Finding the Fourth Proportional to 11,772.16, 17,646.72 and 5,620.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,772.16 : 17,646.72 = 5,620.48 : x
2. Step 2: Convert to fraction form
   11,772.16/17,646.72 = 5,620.48/x
3. Step 3: Cross multiply
   11,772.16x = 17,646.72 × 5,620.48
4. Step 4: Simplify right side
   11,772.16x = 99,183,036.83
5. Step 5: Solve for x
   x = 99,183,036.83/11,772.16
6. Step 6: Final answer
   x = 8,425.22