Finding the Fourth Proportional to 8,780.42, 12,116.98 and 4,801.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,780.42 : 12,116.98 = 4,801.56 : x
2. Step 2: Convert to fraction form
   8,780.42/12,116.98 = 4,801.56/x
3. Step 3: Cross multiply
   8,780.42x = 12,116.98 × 4,801.56
4. Step 4: Simplify right side
   8,780.42x = 58,180,406.49
5. Step 5: Solve for x
   x = 58,180,406.49/8,780.42
6. Step 6: Final answer
   x = 6,626.15