Finding the Fourth Proportional to 11,181.78, 16,772.72 and 3,786.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,181.78 : 16,772.72 = 3,786.30 : x
2. Step 2: Convert to fraction form
   11,181.78/16,772.72 = 3,786.30/x
3. Step 3: Cross multiply
   11,181.78x = 16,772.72 × 3,786.30
4. Step 4: Simplify right side
   11,181.78x = 63,506,530.80
5. Step 5: Solve for x
   x = 63,506,530.80/11,181.78
6. Step 6: Final answer
   x = 5,679.47