Finding the Fourth Proportional to 10,749.29, 16,128.56 and 5,558.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,749.29 : 16,128.56 = 5,558.81 : x
2. Step 2: Convert to fraction form
   10,749.29/16,128.56 = 5,558.81/x
3. Step 3: Cross multiply
   10,749.29x = 16,128.56 × 5,558.81
4. Step 4: Simplify right side
   10,749.29x = 89,655,572.82
5. Step 5: Solve for x
   x = 89,655,572.82/10,749.29
6. Step 6: Final answer
   x = 8,340.60