Finding the Fourth Proportional to 10,749.54, 16,128.93 and 5,559.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,749.54 : 16,128.93 = 5,559.06 : x
2. Step 2: Convert to fraction form
   10,749.54/16,128.93 = 5,559.06/x
3. Step 3: Cross multiply
   10,749.54x = 16,128.93 × 5,559.06
4. Step 4: Simplify right side
   10,749.54x = 89,661,689.61
5. Step 5: Solve for x
   x = 89,661,689.61/10,749.54
6. Step 6: Final answer
   x = 8,340.98