Finding the Fourth Proportional to 8,745.12, 12,061.44 and 5,601.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,745.12 : 12,061.44 = 5,601.60 : x
2. Step 2: Convert to fraction form
   8,745.12/12,061.44 = 5,601.60/x
3. Step 3: Cross multiply
   8,745.12x = 12,061.44 × 5,601.60
4. Step 4: Simplify right side
   8,745.12x = 67,563,362.30
5. Step 5: Solve for x
   x = 67,563,362.30/8,745.12
6. Step 6: Final answer
   x = 7,725.84