Finding the Fourth Proportional to 11,488.32, 17,228.88 and 7,613.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,488.32 : 17,228.88 = 7,613.28 : x
2. Step 2: Convert to fraction form
   11,488.32/17,228.88 = 7,613.28/x
3. Step 3: Cross multiply
   11,488.32x = 17,228.88 × 7,613.28
4. Step 4: Simplify right side
   11,488.32x = 131,168,287.53
5. Step 5: Solve for x
   x = 131,168,287.53/11,488.32
6. Step 6: Final answer
   x = 11,417.53