Finding the Fourth Proportional to 35,870.24, 53,805.62 and 12,496.60

Step by Step Solution

1. Step 1: Write the proportion equation
   35,870.24 : 53,805.62 = 12,496.60 : x
2. Step 2: Convert to fraction form
   35,870.24/53,805.62 = 12,496.60/x
3. Step 3: Cross multiply
   35,870.24x = 53,805.62 × 12,496.60
4. Step 4: Simplify right side
   35,870.24x = 672,387,310.89
5. Step 5: Solve for x
   x = 672,387,310.89/35,870.24
6. Step 6: Final answer
   x = 18,744.99