Finding the Fourth Proportional to 12,280.56, 16,947.48 and 7,567.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280.56 : 16,947.48 = 7,567.92 : x
2. Step 2: Convert to fraction form
   12,280.56/16,947.48 = 7,567.92/x
3. Step 3: Cross multiply
   12,280.56x = 16,947.48 × 7,567.92
4. Step 4: Simplify right side
   12,280.56x = 128,257,172.84
5. Step 5: Solve for x
   x = 128,257,172.84/12,280.56
6. Step 6: Final answer
   x = 10,443.92