Finding the Fourth Proportional to 9,172.88, 12,658.58 and 4,981.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.88 : 12,658.58 = 4,981.12 : x
2. Step 2: Convert to fraction form
   9,172.88/12,658.58 = 4,981.12/x
3. Step 3: Cross multiply
   9,172.88x = 12,658.58 × 4,981.12
4. Step 4: Simplify right side
   9,172.88x = 63,053,906.01
5. Step 5: Solve for x
   x = 63,053,906.01/9,172.88
6. Step 6: Final answer
   x = 6,873.95