Finding the Fourth Proportional to 4,374.96, 6,039.20 and 2,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,374.96 : 6,039.20 = 2,978.56 : x
2. Step 2: Convert to fraction form
   4,374.96/6,039.20 = 2,978.56/x
3. Step 3: Cross multiply
   4,374.96x = 6,039.20 × 2,978.56
4. Step 4: Simplify right side
   4,374.96x = 17,988,119.55
5. Step 5: Solve for x
   x = 17,988,119.55/4,374.96
6. Step 6: Final answer
   x = 4,111.61