Finding the Fourth Proportional to 6,780.89, 9,363.09 and 5,363.39

Step by Step Solution

1. Step 1: Write the proportion equation
   6,780.89 : 9,363.09 = 5,363.39 : x
2. Step 2: Convert to fraction form
   6,780.89/9,363.09 = 5,363.39/x
3. Step 3: Cross multiply
   6,780.89x = 9,363.09 × 5,363.39
4. Step 4: Simplify right side
   6,780.89x = 50,217,856.46
5. Step 5: Solve for x
   x = 50,217,856.46/6,780.89
6. Step 6: Final answer
   x = 7,405.80