Finding the Fourth Proportional to 8,870.40, 13,304.79 and 4,490.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.40 : 13,304.79 = 4,490.82 : x
2. Step 2: Convert to fraction form
   8,870.40/13,304.79 = 4,490.82/x
3. Step 3: Cross multiply
   8,870.40x = 13,304.79 × 4,490.82
4. Step 4: Simplify right side
   8,870.40x = 59,749,417.03
5. Step 5: Solve for x
   x = 59,749,417.03/8,870.40
6. Step 6: Final answer
   x = 6,735.82