Finding the Fourth Proportional to 12,377.89, 18,566.52 and 3,612.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,377.89 : 18,566.52 = 3,612.88 : x
2. Step 2: Convert to fraction form
   12,377.89/18,566.52 = 3,612.88/x
3. Step 3: Cross multiply
   12,377.89x = 18,566.52 × 3,612.88
4. Step 4: Simplify right side
   12,377.89x = 67,078,497.88
5. Step 5: Solve for x
   x = 67,078,497.88/12,377.89
6. Step 6: Final answer
   x = 5,419.22