Finding the Fourth Proportional to 9,491.56, 13,097.35 and 5,511.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,491.56 : 13,097.35 = 5,511.90 : x
2. Step 2: Convert to fraction form
   9,491.56/13,097.35 = 5,511.90/x
3. Step 3: Cross multiply
   9,491.56x = 13,097.35 × 5,511.90
4. Step 4: Simplify right side
   9,491.56x = 72,191,283.47
5. Step 5: Solve for x
   x = 72,191,283.47/9,491.56
6. Step 6: Final answer
   x = 7,605.84