Finding the Fourth Proportional to 9,681.96, 13,362.66 and 5,491.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,681.96 : 13,362.66 = 5,491.56 : x
2. Step 2: Convert to fraction form
   9,681.96/13,362.66 = 5,491.56/x
3. Step 3: Cross multiply
   9,681.96x = 13,362.66 × 5,491.56
4. Step 4: Simplify right side
   9,681.96x = 73,381,849.15
5. Step 5: Solve for x
   x = 73,381,849.15/9,681.96
6. Step 6: Final answer
   x = 7,579.23