Finding the Fourth Proportional to 11,057.28, 16,577.16 and 5,507.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,057.28 : 16,577.16 = 5,507.61 : x
2. Step 2: Convert to fraction form
   11,057.28/16,577.16 = 5,507.61/x
3. Step 3: Cross multiply
   11,057.28x = 16,577.16 × 5,507.61
4. Step 4: Simplify right side
   11,057.28x = 91,300,532.19
5. Step 5: Solve for x
   x = 91,300,532.19/11,057.28
6. Step 6: Final answer
   x = 8,257.05