Finding the Fourth Proportional to 3,978.70, 5,953.04 and 3,574.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.70 : 5,953.04 = 3,574.50 : x
2. Step 2: Convert to fraction form
   3,978.70/5,953.04 = 3,574.50/x
3. Step 3: Cross multiply
   3,978.70x = 5,953.04 × 3,574.50
4. Step 4: Simplify right side
   3,978.70x = 21,279,141.48
5. Step 5: Solve for x
   x = 21,279,141.48/3,978.70
6. Step 6: Final answer
   x = 5,348.26