Finding the Fourth Proportional to 3,978.13, 5,927.21 and 3,754.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.13 : 5,927.21 = 3,754.57 : x
2. Step 2: Convert to fraction form
   3,978.13/5,927.21 = 3,754.57/x
3. Step 3: Cross multiply
   3,978.13x = 5,927.21 × 3,754.57
4. Step 4: Simplify right side
   3,978.13x = 22,254,095.21
5. Step 5: Solve for x
   x = 22,254,095.21/3,978.13
6. Step 6: Final answer
   x = 5,594.12