Finding the Fourth Proportional to 3,978.95, 5,953.43 and 3,574.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.95 : 5,953.43 = 3,574.76 : x
2. Step 2: Convert to fraction form
   3,978.95/5,953.43 = 3,574.76/x
3. Step 3: Cross multiply
   3,978.95x = 5,953.43 × 3,574.76
4. Step 4: Simplify right side
   3,978.95x = 21,282,062.60
5. Step 5: Solve for x
   x = 21,282,062.60/3,978.95
6. Step 6: Final answer
   x = 5,348.67