Finding the Fourth Proportional to 9,181.99, 12,671.69 and 5,149.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,181.99 : 12,671.69 = 5,149.16 : x
2. Step 2: Convert to fraction form
   9,181.99/12,671.69 = 5,149.16/x
3. Step 3: Cross multiply
   9,181.99x = 12,671.69 × 5,149.16
4. Step 4: Simplify right side
   9,181.99x = 65,248,559.28
5. Step 5: Solve for x
   x = 65,248,559.28/9,181.99
6. Step 6: Final answer
   x = 7,106.15