Finding the Fourth Proportional to 9,767.25, 13,476.56 and 5,518.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,767.25 : 13,476.56 = 5,518.09 : x
2. Step 2: Convert to fraction form
   9,767.25/13,476.56 = 5,518.09/x
3. Step 3: Cross multiply
   9,767.25x = 13,476.56 × 5,518.09
4. Step 4: Simplify right side
   9,767.25x = 74,364,803.59
5. Step 5: Solve for x
   x = 74,364,803.59/9,767.25
6. Step 6: Final answer
   x = 7,613.69