Finding the Fourth Proportional to 8,603.24, 12,909.72 and 3,672.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,603.24 : 12,909.72 = 3,672.42 : x
2. Step 2: Convert to fraction form
   8,603.24/12,909.72 = 3,672.42/x
3. Step 3: Cross multiply
   8,603.24x = 12,909.72 × 3,672.42
4. Step 4: Simplify right side
   8,603.24x = 47,409,913.92
5. Step 5: Solve for x
   x = 47,409,913.92/8,603.24
6. Step 6: Final answer
   x = 5,510.70