Finding the Fourth Proportional to 9,393.90, 12,961.46 and 5,616.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,393.90 : 12,961.46 = 5,616.44 : x
2. Step 2: Convert to fraction form
   9,393.90/12,961.46 = 5,616.44/x
3. Step 3: Cross multiply
   9,393.90x = 12,961.46 × 5,616.44
4. Step 4: Simplify right side
   9,393.90x = 72,797,262.40
5. Step 5: Solve for x
   x = 72,797,262.40/9,393.90
6. Step 6: Final answer
   x = 7,749.42