Finding the Fourth Proportional to 5,672.39, 7,813.24 and 3,967.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,672.39 : 7,813.24 = 3,967.88 : x
2. Step 2: Convert to fraction form
   5,672.39/7,813.24 = 3,967.88/x
3. Step 3: Cross multiply
   5,672.39x = 7,813.24 × 3,967.88
4. Step 4: Simplify right side
   5,672.39x = 31,002,008.34
5. Step 5: Solve for x
   x = 31,002,008.34/5,672.39
6. Step 6: Final answer
   x = 5,465.42