Finding the Fourth Proportional to 8,849.56, 12,212.31 and 4,870.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,849.56 : 12,212.31 = 4,870.57 : x
2. Step 2: Convert to fraction form
   8,849.56/12,212.31 = 4,870.57/x
3. Step 3: Cross multiply
   8,849.56x = 12,212.31 × 4,870.57
4. Step 4: Simplify right side
   8,849.56x = 59,480,910.72
5. Step 5: Solve for x
   x = 59,480,910.72/8,849.56
6. Step 6: Final answer
   x = 6,721.34