Finding the Fourth Proportional to 8,849.60, 12,211.96 and 4,870.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,849.60 : 12,211.96 = 4,870.88 : x
2. Step 2: Convert to fraction form
   8,849.60/12,211.96 = 4,870.88/x
3. Step 3: Cross multiply
   8,849.60x = 12,211.96 × 4,870.88
4. Step 4: Simplify right side
   8,849.60x = 59,482,991.72
5. Step 5: Solve for x
   x = 59,482,991.72/8,849.60
6. Step 6: Final answer
   x = 6,721.55