Finding the Fourth Proportional to 5,105.48, 7,654.88 and 2,145.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.48 : 7,654.88 = 2,145.32 : x
2. Step 2: Convert to fraction form
   5,105.48/7,654.88 = 2,145.32/x
3. Step 3: Cross multiply
   5,105.48x = 7,654.88 × 2,145.32
4. Step 4: Simplify right side
   5,105.48x = 16,422,167.16
5. Step 5: Solve for x
   x = 16,422,167.16/5,105.48
6. Step 6: Final answer
   x = 3,216.58