Finding the Fourth Proportional to 8,851.91, 12,215.72 and 4,873.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,851.91 : 12,215.72 = 4,873.12 : x
2. Step 2: Convert to fraction form
   8,851.91/12,215.72 = 4,873.12/x
3. Step 3: Cross multiply
   8,851.91x = 12,215.72 × 4,873.12
4. Step 4: Simplify right side
   8,851.91x = 59,528,651.09
5. Step 5: Solve for x
   x = 59,528,651.09/8,851.91
6. Step 6: Final answer
   x = 6,724.95