Finding the Fourth Proportional to 8,849.70, 12,212.15 and 4,870.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,849.70 : 12,212.15 = 4,870.71 : x
2. Step 2: Convert to fraction form
   8,849.70/12,212.15 = 4,870.71/x
3. Step 3: Cross multiply
   8,849.70x = 12,212.15 × 4,870.71
4. Step 4: Simplify right side
   8,849.70x = 59,481,816.77
5. Step 5: Solve for x
   x = 59,481,816.77/8,849.70
6. Step 6: Final answer
   x = 6,721.34