Finding the Fourth Proportional to 8,849.58, 12,212.61 and 4,870.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,849.58 : 12,212.61 = 4,870.90 : x
2. Step 2: Convert to fraction form
   8,849.58/12,212.61 = 4,870.90/x
3. Step 3: Cross multiply
   8,849.58x = 12,212.61 × 4,870.90
4. Step 4: Simplify right side
   8,849.58x = 59,486,402.05
5. Step 5: Solve for x
   x = 59,486,402.05/8,849.58
6. Step 6: Final answer
   x = 6,721.95