Finding the Fourth Proportional to 8,780.40, 12,116.33 and 4,801.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,780.40 : 12,116.33 = 4,801.43 : x
2. Step 2: Convert to fraction form
   8,780.40/12,116.33 = 4,801.43/x
3. Step 3: Cross multiply
   8,780.40x = 12,116.33 × 4,801.43
4. Step 4: Simplify right side
   8,780.40x = 58,175,693.49
5. Step 5: Solve for x
   x = 58,175,693.49/8,780.40
6. Step 6: Final answer
   x = 6,625.63