Finding the Fourth Proportional to 9,172.71, 12,658.41 and 4,980.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.71 : 12,658.41 = 4,980.96 : x
2. Step 2: Convert to fraction form
   9,172.71/12,658.41 = 4,980.96/x
3. Step 3: Cross multiply
   9,172.71x = 12,658.41 × 4,980.96
4. Step 4: Simplify right side
   9,172.71x = 63,051,033.87
5. Step 5: Solve for x
   x = 63,051,033.87/9,172.71
6. Step 6: Final answer
   x = 6,873.76