Finding the Fourth Proportional to 7,335.39, 10,122.82 and 3,978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,335.39 : 10,122.82 = 3,978.18 : x
2. Step 2: Convert to fraction form
   7,335.39/10,122.82 = 3,978.18/x
3. Step 3: Cross multiply
   7,335.39x = 10,122.82 × 3,978.18
4. Step 4: Simplify right side
   7,335.39x = 40,270,400.07
5. Step 5: Solve for x
   x = 40,270,400.07/7,335.39
6. Step 6: Final answer
   x = 5,489.88