Finding the Fourth Proportional to 9,172.69, 12,658.32 and 4,980.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.69 : 12,658.32 = 4,980.94 : x
2. Step 2: Convert to fraction form
   9,172.69/12,658.32 = 4,980.94/x
3. Step 3: Cross multiply
   9,172.69x = 12,658.32 × 4,980.94
4. Step 4: Simplify right side
   9,172.69x = 63,050,300.78
5. Step 5: Solve for x
   x = 63,050,300.78/9,172.69
6. Step 6: Final answer
   x = 6,873.70