Finding the Fourth Proportional to 12,288.56, 16,958.52 and 7,575.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,288.56 : 16,958.52 = 7,575.92 : x
2. Step 2: Convert to fraction form
   12,288.56/16,958.52 = 7,575.92/x
3. Step 3: Cross multiply
   12,288.56x = 16,958.52 × 7,575.92
4. Step 4: Simplify right side
   12,288.56x = 128,476,390.84
5. Step 5: Solve for x
   x = 128,476,390.84/12,288.56
6. Step 6: Final answer
   x = 10,454.96