Finding the Fourth Proportional to 12,051.72, 16,631.37 and 6,747.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,051.72 : 16,631.37 = 6,747.78 : x
2. Step 2: Convert to fraction form
   12,051.72/16,631.37 = 6,747.78/x
3. Step 3: Cross multiply
   12,051.72x = 16,631.37 × 6,747.78
4. Step 4: Simplify right side
   12,051.72x = 112,224,825.86
5. Step 5: Solve for x
   x = 112,224,825.86/12,051.72
6. Step 6: Final answer
   x = 9,311.93