Finding the Fourth Proportional to 8,870.10, 12,240.82 and 4,891.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.10 : 12,240.82 = 4,891.36 : x
2. Step 2: Convert to fraction form
   8,870.10/12,240.82 = 4,891.36/x
3. Step 3: Cross multiply
   8,870.10x = 12,240.82 × 4,891.36
4. Step 4: Simplify right side
   8,870.10x = 59,874,257.32
5. Step 5: Solve for x
   x = 59,874,257.32/8,870.10
6. Step 6: Final answer
   x = 6,750.12