Finding the Fourth Proportional to 9,987.62, 13,782.46 and 5,735.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,987.62 : 13,782.46 = 5,735.70 : x
2. Step 2: Convert to fraction form
   9,987.62/13,782.46 = 5,735.70/x
3. Step 3: Cross multiply
   9,987.62x = 13,782.46 × 5,735.70
4. Step 4: Simplify right side
   9,987.62x = 79,052,055.82
5. Step 5: Solve for x
   x = 79,052,055.82/9,987.62
6. Step 6: Final answer
   x = 7,915.00