Finding the Fourth Proportional to 5,320.24, 7,987.72 and 3,672.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,320.24 : 7,987.72 = 3,672.72 : x
2. Step 2: Convert to fraction form
   5,320.24/7,987.72 = 3,672.72/x
3. Step 3: Cross multiply
   5,320.24x = 7,987.72 × 3,672.72
4. Step 4: Simplify right side
   5,320.24x = 29,336,659.00
5. Step 5: Solve for x
   x = 29,336,659.00/5,320.24
6. Step 6: Final answer
   x = 5,514.16