Finding the Fourth Proportional to 7,648.50, 10,554.78 and 4,291.29

Step by Step Solution

1. Step 1: Write the proportion equation
   7,648.50 : 10,554.78 = 4,291.29 : x
2. Step 2: Convert to fraction form
   7,648.50/10,554.78 = 4,291.29/x
3. Step 3: Cross multiply
   7,648.50x = 10,554.78 × 4,291.29
4. Step 4: Simplify right side
   7,648.50x = 45,293,621.87
5. Step 5: Solve for x
   x = 45,293,621.87/7,648.50
6. Step 6: Final answer
   x = 5,921.90