Finding the Fourth Proportional to 10,535.12, 15,805.33 and 4,986.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,535.12 : 15,805.33 = 4,986.97 : x
2. Step 2: Convert to fraction form
   10,535.12/15,805.33 = 4,986.97/x
3. Step 3: Cross multiply
   10,535.12x = 15,805.33 × 4,986.97
4. Step 4: Simplify right side
   10,535.12x = 78,820,654.57
5. Step 5: Solve for x
   x = 78,820,654.57/10,535.12
6. Step 6: Final answer
   x = 7,481.71