Finding the Fourth Proportional to 5,433.72, 8,147.78 and 2,659.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,433.72 : 8,147.78 = 2,659.16 : x
2. Step 2: Convert to fraction form
   5,433.72/8,147.78 = 2,659.16/x
3. Step 3: Cross multiply
   5,433.72x = 8,147.78 × 2,659.16
4. Step 4: Simplify right side
   5,433.72x = 21,666,250.66
5. Step 5: Solve for x
   x = 21,666,250.66/5,433.72
6. Step 6: Final answer
   x = 3,987.37