Finding the Fourth Proportional to 35,540.57, 53,308.69 and 10,580.69

Step by Step Solution

1. Step 1: Write the proportion equation
   35,540.57 : 53,308.69 = 10,580.69 : x
2. Step 2: Convert to fraction form
   35,540.57/53,308.69 = 10,580.69/x
3. Step 3: Cross multiply
   35,540.57x = 53,308.69 × 10,580.69
4. Step 4: Simplify right side
   35,540.57x = 564,042,723.20
5. Step 5: Solve for x
   x = 564,042,723.20/35,540.57
6. Step 6: Final answer
   x = 15,870.39