Finding the Fourth Proportional to 10,749.04, 16,128.20 and 5,558.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,749.04 : 16,128.20 = 5,558.56 : x
2. Step 2: Convert to fraction form
   10,749.04/16,128.20 = 5,558.56/x
3. Step 3: Cross multiply
   10,749.04x = 16,128.20 × 5,558.56
4. Step 4: Simplify right side
   10,749.04x = 89,649,567.39
5. Step 5: Solve for x
   x = 89,649,567.39/10,749.04
6. Step 6: Final answer
   x = 8,340.24