Finding the Fourth Proportional to 10,978.08, 15,149.70 and 5,942.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.08 : 15,149.70 = 5,942.28 : x
2. Step 2: Convert to fraction form
   10,978.08/15,149.70 = 5,942.28/x
3. Step 3: Cross multiply
   10,978.08x = 15,149.70 × 5,942.28
4. Step 4: Simplify right side
   10,978.08x = 90,023,759.32
5. Step 5: Solve for x
   x = 90,023,759.32/10,978.08
6. Step 6: Final answer
   x = 8,200.32