Finding the Fourth Proportional to 9,240.28, 12,751.59 and 4,991.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,240.28 : 12,751.59 = 4,991.34 : x
2. Step 2: Convert to fraction form
   9,240.28/12,751.59 = 4,991.34/x
3. Step 3: Cross multiply
   9,240.28x = 12,751.59 × 4,991.34
4. Step 4: Simplify right side
   9,240.28x = 63,647,510.14
5. Step 5: Solve for x
   x = 63,647,510.14/9,240.28
6. Step 6: Final answer
   x = 6,888.05