Finding the Fourth Proportional to 13,662.16, 20,480.64 and 5,347.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,662.16 : 20,480.64 = 5,347.84 : x
2. Step 2: Convert to fraction form
   13,662.16/20,480.64 = 5,347.84/x
3. Step 3: Cross multiply
   13,662.16x = 20,480.64 × 5,347.84
4. Step 4: Simplify right side
   13,662.16x = 109,527,185.82
5. Step 5: Solve for x
   x = 109,527,185.82/13,662.16
6. Step 6: Final answer
   x = 8,016.83