Finding the Fourth Proportional to 9,491.34, 13,097.30 and 5,511.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,491.34 : 13,097.30 = 5,511.80 : x
2. Step 2: Convert to fraction form
   9,491.34/13,097.30 = 5,511.80/x
3. Step 3: Cross multiply
   9,491.34x = 13,097.30 × 5,511.80
4. Step 4: Simplify right side
   9,491.34x = 72,189,698.14
5. Step 5: Solve for x
   x = 72,189,698.14/9,491.34
6. Step 6: Final answer
   x = 7,605.85