Finding the Fourth Proportional to 9,150.72, 13,719.87 and 2,908.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.72 : 13,719.87 = 2,908.86 : x
2. Step 2: Convert to fraction form
   9,150.72/13,719.87 = 2,908.86/x
3. Step 3: Cross multiply
   9,150.72x = 13,719.87 × 2,908.86
4. Step 4: Simplify right side
   9,150.72x = 39,909,181.05
5. Step 5: Solve for x
   x = 39,909,181.05/9,150.72
6. Step 6: Final answer
   x = 4,361.32