Finding the Fourth Proportional to 9,739.78, 13,443.65 and 5,762.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,739.78 : 13,443.65 = 5,762.28 : x
2. Step 2: Convert to fraction form
   9,739.78/13,443.65 = 5,762.28/x
3. Step 3: Cross multiply
   9,739.78x = 13,443.65 × 5,762.28
4. Step 4: Simplify right side
   9,739.78x = 77,466,075.52
5. Step 5: Solve for x
   x = 77,466,075.52/9,739.78
6. Step 6: Final answer
   x = 7,953.58