Finding the Fourth Proportional to 11,162.57, 15,414.72 and 7,190.51

Step by Step Solution

1. Step 1: Write the proportion equation
   11,162.57 : 15,414.72 = 7,190.51 : x
2. Step 2: Convert to fraction form
   11,162.57/15,414.72 = 7,190.51/x
3. Step 3: Cross multiply
   11,162.57x = 15,414.72 × 7,190.51
4. Step 4: Simplify right side
   11,162.57x = 110,839,698.31
5. Step 5: Solve for x
   x = 110,839,698.31/11,162.57
6. Step 6: Final answer
   x = 9,929.59