Finding the Fourth Proportional to 6,384.96, 8,789.40 and 5,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,384.96 : 8,789.40 = 5,540.72 : x
2. Step 2: Convert to fraction form
   6,384.96/8,789.40 = 5,540.72/x
3. Step 3: Cross multiply
   6,384.96x = 8,789.40 × 5,540.72
4. Step 4: Simplify right side
   6,384.96x = 48,699,560.42
5. Step 5: Solve for x
   x = 48,699,560.42/6,384.96
6. Step 6: Final answer
   x = 7,627.23