Finding the Fourth Proportional to 6,818.84, 9,407.73 and 5,557.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,818.84 : 9,407.73 = 5,557.72 : x
2. Step 2: Convert to fraction form
   6,818.84/9,407.73 = 5,557.72/x
3. Step 3: Cross multiply
   6,818.84x = 9,407.73 × 5,557.72
4. Step 4: Simplify right side
   6,818.84x = 52,285,501.39
5. Step 5: Solve for x
   x = 52,285,501.39/6,818.84
6. Step 6: Final answer
   x = 7,667.81