Finding the Fourth Proportional to 13,061.72, 19,593.52 and 6,481.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.72 : 19,593.52 = 6,481.28 : x
2. Step 2: Convert to fraction form
   13,061.72/19,593.52 = 6,481.28/x
3. Step 3: Cross multiply
   13,061.72x = 19,593.52 × 6,481.28
4. Step 4: Simplify right side
   13,061.72x = 126,991,089.31
5. Step 5: Solve for x
   x = 126,991,089.31/13,061.72
6. Step 6: Final answer
   x = 9,722.39