Finding the Fourth Proportional to 9,360.63, 12,918.42 and 5,584.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,360.63 : 12,918.42 = 5,584.95 : x
2. Step 2: Convert to fraction form
   9,360.63/12,918.42 = 5,584.95/x
3. Step 3: Cross multiply
   9,360.63x = 12,918.42 × 5,584.95
4. Step 4: Simplify right side
   9,360.63x = 72,148,729.78
5. Step 5: Solve for x
   x = 72,148,729.78/9,360.63
6. Step 6: Final answer
   x = 7,707.68