Finding the Fourth Proportional to 6,560.82, 9,026.37 and 5,428.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,560.82 : 9,026.37 = 5,428.98 : x
2. Step 2: Convert to fraction form
   6,560.82/9,026.37 = 5,428.98/x
3. Step 3: Cross multiply
   6,560.82x = 9,026.37 × 5,428.98
4. Step 4: Simplify right side
   6,560.82x = 49,003,982.20
5. Step 5: Solve for x
   x = 49,003,982.20/6,560.82
6. Step 6: Final answer
   x = 7,469.19