Finding the Fourth Proportional to 10,978.65, 15,150.55 and 5,942.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.65 : 15,150.55 = 5,942.86 : x
2. Step 2: Convert to fraction form
   10,978.65/15,150.55 = 5,942.86/x
3. Step 3: Cross multiply
   10,978.65x = 15,150.55 × 5,942.86
4. Step 4: Simplify right side
   10,978.65x = 90,037,526.32
5. Step 5: Solve for x
   x = 90,037,526.32/10,978.65
6. Step 6: Final answer
   x = 8,201.15