Finding the Fourth Proportional to 5,111.48, 7,670.17 and 2,149.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.48 : 7,670.17 = 2,149.69 : x
2. Step 2: Convert to fraction form
   5,111.48/7,670.17 = 2,149.69/x
3. Step 3: Cross multiply
   5,111.48x = 7,670.17 × 2,149.69
4. Step 4: Simplify right side
   5,111.48x = 16,488,487.75
5. Step 5: Solve for x
   x = 16,488,487.75/5,111.48
6. Step 6: Final answer
   x = 3,225.78