Finding the Fourth Proportional to 11,077.72, 16,616.64 and 3,181.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,077.72 : 16,616.64 = 3,181.15 : x
2. Step 2: Convert to fraction form
   11,077.72/16,616.64 = 3,181.15/x
3. Step 3: Cross multiply
   11,077.72x = 16,616.64 × 3,181.15
4. Step 4: Simplify right side
   11,077.72x = 52,860,024.34
5. Step 5: Solve for x
   x = 52,860,024.34/11,077.72
6. Step 6: Final answer
   x = 4,771.74