Finding the Fourth Proportional to 10,978.52, 15,150.21 and 5,942.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.52 : 15,150.21 = 5,942.61 : x
2. Step 2: Convert to fraction form
   10,978.52/15,150.21 = 5,942.61/x
3. Step 3: Cross multiply
   10,978.52x = 15,150.21 × 5,942.61
4. Step 4: Simplify right side
   10,978.52x = 90,031,789.45
5. Step 5: Solve for x
   x = 90,031,789.45/10,978.52
6. Step 6: Final answer
   x = 8,200.73