Finding the Fourth Proportional to 8,889.63, 12,267.14 and 4,910.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,889.63 : 12,267.14 = 4,910.55 : x
2. Step 2: Convert to fraction form
   8,889.63/12,267.14 = 4,910.55/x
3. Step 3: Cross multiply
   8,889.63x = 12,267.14 × 4,910.55
4. Step 4: Simplify right side
   8,889.63x = 60,238,379.77
5. Step 5: Solve for x
   x = 60,238,379.77/8,889.63
6. Step 6: Final answer
   x = 6,776.25