Finding the Fourth Proportional to 8,870.94, 12,241.20 and 4,891.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.94 : 12,241.20 = 4,891.80 : x
2. Step 2: Convert to fraction form
   8,870.94/12,241.20 = 4,891.80/x
3. Step 3: Cross multiply
   8,870.94x = 12,241.20 × 4,891.80
4. Step 4: Simplify right side
   8,870.94x = 59,881,502.16
5. Step 5: Solve for x
   x = 59,881,502.16/8,870.94
6. Step 6: Final answer
   x = 6,750.30