Finding the Fourth Proportional to 5,335.86, 7,363.80 and 2,978.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,335.86 : 7,363.80 = 2,978.15 : x
2. Step 2: Convert to fraction form
   5,335.86/7,363.80 = 2,978.15/x
3. Step 3: Cross multiply
   5,335.86x = 7,363.80 × 2,978.15
4. Step 4: Simplify right side
   5,335.86x = 21,930,464.15
5. Step 5: Solve for x
   x = 21,930,464.15/5,335.86
6. Step 6: Final answer
   x = 4,110.02