Finding the Fourth Proportional to 5,759.90, 7,962.80 and 5,707.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,759.90 : 7,962.80 = 5,707.25 : x
2. Step 2: Convert to fraction form
   5,759.90/7,962.80 = 5,707.25/x
3. Step 3: Cross multiply
   5,759.90x = 7,962.80 × 5,707.25
4. Step 4: Simplify right side
   5,759.90x = 45,445,621.95
5. Step 5: Solve for x
   x = 45,445,621.95/5,759.90
6. Step 6: Final answer
   x = 7,890.01