Finding the Fourth Proportional to 9,491.83, 13,101.39 and 5,512.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,491.83 : 13,101.39 = 5,512.21 : x
2. Step 2: Convert to fraction form
   9,491.83/13,101.39 = 5,512.21/x
3. Step 3: Cross multiply
   9,491.83x = 13,101.39 × 5,512.21
4. Step 4: Simplify right side
   9,491.83x = 72,217,612.97
5. Step 5: Solve for x
   x = 72,217,612.97/9,491.83
6. Step 6: Final answer
   x = 7,608.40