Finding the Fourth Proportional to 35,986.08, 53,978.76 and 12,293.37

Step by Step Solution

1. Step 1: Write the proportion equation
   35,986.08 : 53,978.76 = 12,293.37 : x
2. Step 2: Convert to fraction form
   35,986.08/53,978.76 = 12,293.37/x
3. Step 3: Cross multiply
   35,986.08x = 53,978.76 × 12,293.37
4. Step 4: Simplify right side
   35,986.08x = 663,580,868.82
5. Step 5: Solve for x
   x = 663,580,868.82/35,986.08
6. Step 6: Final answer
   x = 18,439.93