Finding the Fourth Proportional to 7,978.89, 11,010.69 and 4,442.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,978.89 : 11,010.69 = 4,442.43 : x
2. Step 2: Convert to fraction form
   7,978.89/11,010.69 = 4,442.43/x
3. Step 3: Cross multiply
   7,978.89x = 11,010.69 × 4,442.43
4. Step 4: Simplify right side
   7,978.89x = 48,914,219.58
5. Step 5: Solve for x
   x = 48,914,219.58/7,978.89
6. Step 6: Final answer
   x = 6,130.45