Finding the Fourth Proportional to 8,855.21, 12,219.98 and 4,876.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,855.21 : 12,219.98 = 4,876.29 : x
2. Step 2: Convert to fraction form
   8,855.21/12,219.98 = 4,876.29/x
3. Step 3: Cross multiply
   8,855.21x = 12,219.98 × 4,876.29
4. Step 4: Simplify right side
   8,855.21x = 59,588,141.89
5. Step 5: Solve for x
   x = 59,588,141.89/8,855.21
6. Step 6: Final answer
   x = 6,729.17