Finding the Fourth Proportional to 11,175.90, 15,422.22 and 7,200.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,175.90 : 15,422.22 = 7,200.96 : x
2. Step 2: Convert to fraction form
   11,175.90/15,422.22 = 7,200.96/x
3. Step 3: Cross multiply
   11,175.90x = 15,422.22 × 7,200.96
4. Step 4: Simplify right side
   11,175.90x = 111,054,789.33
5. Step 5: Solve for x
   x = 111,054,789.33/11,175.90
6. Step 6: Final answer
   x = 9,936.99