Finding the Fourth Proportional to 12,384.02, 18,579.42 and 3,618.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384.02 : 18,579.42 = 3,618.87 : x
2. Step 2: Convert to fraction form
   12,384.02/18,579.42 = 3,618.87/x
3. Step 3: Cross multiply
   12,384.02x = 18,579.42 × 3,618.87
4. Step 4: Simplify right side
   12,384.02x = 67,236,505.66
5. Step 5: Solve for x
   x = 67,236,505.66/12,384.02
6. Step 6: Final answer
   x = 5,429.30