Finding the Fourth Proportional to 13,860.87, 19,128.06 and 7,573.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,860.87 : 19,128.06 = 7,573.38 : x
2. Step 2: Convert to fraction form
   13,860.87/19,128.06 = 7,573.38/x
3. Step 3: Cross multiply
   13,860.87x = 19,128.06 × 7,573.38
4. Step 4: Simplify right side
   13,860.87x = 144,864,067.04
5. Step 5: Solve for x
   x = 144,864,067.04/13,860.87
6. Step 6: Final answer
   x = 10,451.30