Finding the Fourth Proportional to 7,978.59, 11,967.98 and 3,048.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,978.59 : 11,967.98 = 3,048.71 : x
2. Step 2: Convert to fraction form
   7,978.59/11,967.98 = 3,048.71/x
3. Step 3: Cross multiply
   7,978.59x = 11,967.98 × 3,048.71
4. Step 4: Simplify right side
   7,978.59x = 36,486,825.22
5. Step 5: Solve for x
   x = 36,486,825.22/7,978.59
6. Step 6: Final answer
   x = 4,573.09