Finding the Fourth Proportional to 35,978.01, 53,982.55 and 19,318.53

Step by Step Solution

1. Step 1: Write the proportion equation
   35,978.01 : 53,982.55 = 19,318.53 : x
2. Step 2: Convert to fraction form
   35,978.01/53,982.55 = 19,318.53/x
3. Step 3: Cross multiply
   35,978.01x = 53,982.55 × 19,318.53
4. Step 4: Simplify right side
   35,978.01x = 1,042,863,738.23
5. Step 5: Solve for x
   x = 1,042,863,738.23/35,978.01
6. Step 6: Final answer
   x = 28,986.15