Finding the Fourth Proportional to 5,308.72, 7,322.64 and 3,422.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,308.72 : 7,322.64 = 3,422.72 : x
2. Step 2: Convert to fraction form
   5,308.72/7,322.64 = 3,422.72/x
3. Step 3: Cross multiply
   5,308.72x = 7,322.64 × 3,422.72
4. Step 4: Simplify right side
   5,308.72x = 25,063,346.38
5. Step 5: Solve for x
   x = 25,063,346.38/5,308.72
6. Step 6: Final answer
   x = 4,721.17