Finding the Fourth Proportional to 9,172.29, 12,657.83 and 4,980.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.29 : 12,657.83 = 4,980.54 : x
2. Step 2: Convert to fraction form
   9,172.29/12,657.83 = 4,980.54/x
3. Step 3: Cross multiply
   9,172.29x = 12,657.83 × 4,980.54
4. Step 4: Simplify right side
   9,172.29x = 63,042,803.73
5. Step 5: Solve for x
   x = 63,042,803.73/9,172.29
6. Step 6: Final answer
   x = 6,873.18