Finding the Fourth Proportional to 9,978.97, 14,970.81 and 2,959.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.97 : 14,970.81 = 2,959.05 : x
2. Step 2: Convert to fraction form
   9,978.97/14,970.81 = 2,959.05/x
3. Step 3: Cross multiply
   9,978.97x = 14,970.81 × 2,959.05
4. Step 4: Simplify right side
   9,978.97x = 44,299,375.33
5. Step 5: Solve for x
   x = 44,299,375.33/9,978.97
6. Step 6: Final answer
   x = 4,439.27