Finding the Fourth Proportional to 8,436.09, 11,641.83 and 4,899.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,436.09 : 11,641.83 = 4,899.30 : x
2. Step 2: Convert to fraction form
   8,436.09/11,641.83 = 4,899.30/x
3. Step 3: Cross multiply
   8,436.09x = 11,641.83 × 4,899.30
4. Step 4: Simplify right side
   8,436.09x = 57,036,817.72
5. Step 5: Solve for x
   x = 57,036,817.72/8,436.09
6. Step 6: Final answer
   x = 6,761.05