Finding the Fourth Proportional to 12,216.83, 18,327.05 and 4,423.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,216.83 : 18,327.05 = 4,423.82 : x
2. Step 2: Convert to fraction form
   12,216.83/18,327.05 = 4,423.82/x
3. Step 3: Cross multiply
   12,216.83x = 18,327.05 × 4,423.82
4. Step 4: Simplify right side
   12,216.83x = 81,075,548.21
5. Step 5: Solve for x
   x = 81,075,548.21/12,216.83
6. Step 6: Final answer
   x = 6,636.38