Finding the Fourth Proportional to 8,865.72, 12,235.32 and 5,089.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,865.72 : 12,235.32 = 5,089.50 : x
2. Step 2: Convert to fraction form
   8,865.72/12,235.32 = 5,089.50/x
3. Step 3: Cross multiply
   8,865.72x = 12,235.32 × 5,089.50
4. Step 4: Simplify right side
   8,865.72x = 62,271,661.14
5. Step 5: Solve for x
   x = 62,271,661.14/8,865.72
6. Step 6: Final answer
   x = 7,023.87