Finding the Fourth Proportional to 13,145.52, 19,717.72 and 5,354.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,145.52 : 19,717.72 = 5,354.48 : x
2. Step 2: Convert to fraction form
   13,145.52/19,717.72 = 5,354.48/x
3. Step 3: Cross multiply
   13,145.52x = 19,717.72 × 5,354.48
4. Step 4: Simplify right side
   13,145.52x = 105,578,137.39
5. Step 5: Solve for x
   x = 105,578,137.39/13,145.52
6. Step 6: Final answer
   x = 8,031.49