Finding the Fourth Proportional to 13,105.50, 19,633.53 and 10,149.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,105.50 : 19,633.53 = 10,149.06 : x
2. Step 2: Convert to fraction form
   13,105.50/19,633.53 = 10,149.06/x
3. Step 3: Cross multiply
   13,105.50x = 19,633.53 × 10,149.06
4. Step 4: Simplify right side
   13,105.50x = 199,261,873.98
5. Step 5: Solve for x
   x = 199,261,873.98/13,105.50
6. Step 6: Final answer
   x = 15,204.45