Finding the Fourth Proportional to 3,978.58, 5,973.51 and 2,888.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.58 : 5,973.51 = 2,888.38 : x
2. Step 2: Convert to fraction form
   3,978.58/5,973.51 = 2,888.38/x
3. Step 3: Cross multiply
   3,978.58x = 5,973.51 × 2,888.38
4. Step 4: Simplify right side
   3,978.58x = 17,253,766.81
5. Step 5: Solve for x
   x = 17,253,766.81/3,978.58
6. Step 6: Final answer
   x = 4,336.66