Finding the Fourth Proportional to 8,697.91, 12,002.38 and 4,920.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,697.91 : 12,002.38 = 4,920.88 : x
2. Step 2: Convert to fraction form
   8,697.91/12,002.38 = 4,920.88/x
3. Step 3: Cross multiply
   8,697.91x = 12,002.38 × 4,920.88
4. Step 4: Simplify right side
   8,697.91x = 59,062,271.69
5. Step 5: Solve for x
   x = 59,062,271.69/8,697.91
6. Step 6: Final answer
   x = 6,790.40