Finding the Fourth Proportional to 5,662.88, 7,808.80 and 3,983.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,662.88 : 7,808.80 = 3,983.72 : x
2. Step 2: Convert to fraction form
   5,662.88/7,808.80 = 3,983.72/x
3. Step 3: Cross multiply
   5,662.88x = 7,808.80 × 3,983.72
4. Step 4: Simplify right side
   5,662.88x = 31,108,072.74
5. Step 5: Solve for x
   x = 31,108,072.74/5,662.88
6. Step 6: Final answer
   x = 5,493.33