Finding the Fourth Proportional to 9,141.54, 12,615.34 and 4,949.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,141.54 : 12,615.34 = 4,949.80 : x
2. Step 2: Convert to fraction form
   9,141.54/12,615.34 = 4,949.80/x
3. Step 3: Cross multiply
   9,141.54x = 12,615.34 × 4,949.80
4. Step 4: Simplify right side
   9,141.54x = 62,443,409.93
5. Step 5: Solve for x
   x = 62,443,409.93/9,141.54
6. Step 6: Final answer
   x = 6,830.73