Finding the Fourth Proportional to 8,778.98, 12,115.37 and 4,799.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,778.98 : 12,115.37 = 4,799.86 : x
2. Step 2: Convert to fraction form
   8,778.98/12,115.37 = 4,799.86/x
3. Step 3: Cross multiply
   8,778.98x = 12,115.37 × 4,799.86
4. Step 4: Simplify right side
   8,778.98x = 58,152,061.56
5. Step 5: Solve for x
   x = 58,152,061.56/8,778.98
6. Step 6: Final answer
   x = 6,624.01