Finding the Fourth Proportional to 13,891.52, 19,147.52 and 8,574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,891.52 : 19,147.52 = 8,574.72 : x
2. Step 2: Convert to fraction form
   13,891.52/19,147.52 = 8,574.72/x
3. Step 3: Cross multiply
   13,891.52x = 19,147.52 × 8,574.72
4. Step 4: Simplify right side
   13,891.52x = 164,184,622.69
5. Step 5: Solve for x
   x = 164,184,622.69/13,891.52
6. Step 6: Final answer
   x = 11,819.05