Finding the Fourth Proportional to 10,978.81, 15,150.78 and 5,943.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.81 : 15,150.78 = 5,943.04 : x
2. Step 2: Convert to fraction form
   10,978.81/15,150.78 = 5,943.04/x
3. Step 3: Cross multiply
   10,978.81x = 15,150.78 × 5,943.04
4. Step 4: Simplify right side
   10,978.81x = 90,041,691.57
5. Step 5: Solve for x
   x = 90,041,691.57/10,978.81
6. Step 6: Final answer
   x = 8,201.41