Finding the Fourth Proportional to 9,810.96, 13,535.80 and 5,561.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810.96 : 13,535.80 = 5,561.56 : x
2. Step 2: Convert to fraction form
   9,810.96/13,535.80 = 5,561.56/x
3. Step 3: Cross multiply
   9,810.96x = 13,535.80 × 5,561.56
4. Step 4: Simplify right side
   9,810.96x = 75,280,163.85
5. Step 5: Solve for x
   x = 75,280,163.85/9,810.96
6. Step 6: Final answer
   x = 7,673.07