Finding the Fourth Proportional to 9,616.62, 13,256.39 and 7,488.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,616.62 : 13,256.39 = 7,488.39 : x
2. Step 2: Convert to fraction form
   9,616.62/13,256.39 = 7,488.39/x
3. Step 3: Cross multiply
   9,616.62x = 13,256.39 × 7,488.39
4. Step 4: Simplify right side
   9,616.62x = 99,269,086.74
5. Step 5: Solve for x
   x = 99,269,086.74/9,616.62
6. Step 6: Final answer
   x = 10,322.66