Finding the Fourth Proportional to 35,978.82, 53,977.38 and 12,604.68

Step by Step Solution

1. Step 1: Write the proportion equation
   35,978.82 : 53,977.38 = 12,604.68 : x
2. Step 2: Convert to fraction form
   35,978.82/53,977.38 = 12,604.68/x
3. Step 3: Cross multiply
   35,978.82x = 53,977.38 × 12,604.68
4. Step 4: Simplify right side
   35,978.82x = 680,367,602.14
5. Step 5: Solve for x
   x = 680,367,602.14/35,978.82
6. Step 6: Final answer
   x = 18,910.23