Finding the Fourth Proportional to 9,707.25, 13,396.01 and 5,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,707.25 : 13,396.01 = 5,515.50 : x
2. Step 2: Convert to fraction form
   9,707.25/13,396.01 = 5,515.50/x
3. Step 3: Cross multiply
   9,707.25x = 13,396.01 × 5,515.50
4. Step 4: Simplify right side
   9,707.25x = 73,885,665.58
5. Step 5: Solve for x
   x = 73,885,665.58/9,707.25
6. Step 6: Final answer
   x = 7,611.39