Finding the Fourth Proportional to 8,780.15, 12,116.61 and 4,801.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,780.15 : 12,116.61 = 4,801.27 : x
2. Step 2: Convert to fraction form
   8,780.15/12,116.61 = 4,801.27/x
3. Step 3: Cross multiply
   8,780.15x = 12,116.61 × 4,801.27
4. Step 4: Simplify right side
   8,780.15x = 58,175,085.80
5. Step 5: Solve for x
   x = 58,175,085.80/8,780.15
6. Step 6: Final answer
   x = 6,625.75