Finding the Fourth Proportional to 9,491.72, 13,098.66 and 5,513

Step by Step Solution

1. Step 1: Write the proportion equation
   9,491.72 : 13,098.66 = 5,513 : x
2. Step 2: Convert to fraction form
   9,491.72/13,098.66 = 5,513/x
3. Step 3: Cross multiply
   9,491.72x = 13,098.66 × 5,513
4. Step 4: Simplify right side
   9,491.72x = 72,212,912.58
5. Step 5: Solve for x
   x = 72,212,912.58/9,491.72
6. Step 6: Final answer
   x = 7,607.99