Finding the Fourth Proportional to 5,978.72, 8,251.44 and 3,494.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.72 : 8,251.44 = 3,494.72 : x
2. Step 2: Convert to fraction form
   5,978.72/8,251.44 = 3,494.72/x
3. Step 3: Cross multiply
   5,978.72x = 8,251.44 × 3,494.72
4. Step 4: Simplify right side
   5,978.72x = 28,836,472.40
5. Step 5: Solve for x
   x = 28,836,472.40/5,978.72
6. Step 6: Final answer
   x = 4,823.18