Finding the Fourth Proportional to 9,172.85, 12,658.68 and 4,981.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.85 : 12,658.68 = 4,981.10 : x
2. Step 2: Convert to fraction form
   9,172.85/12,658.68 = 4,981.10/x
3. Step 3: Cross multiply
   9,172.85x = 12,658.68 × 4,981.10
4. Step 4: Simplify right side
   9,172.85x = 63,054,087.65
5. Step 5: Solve for x
   x = 63,054,087.65/9,172.85
6. Step 6: Final answer
   x = 6,873.99