Finding the Fourth Proportional to 13,859.59, 19,126.23 and 7,571.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,859.59 : 19,126.23 = 7,571.96 : x
2. Step 2: Convert to fraction form
   13,859.59/19,126.23 = 7,571.96/x
3. Step 3: Cross multiply
   13,859.59x = 19,126.23 × 7,571.96
4. Step 4: Simplify right side
   13,859.59x = 144,823,146.39
5. Step 5: Solve for x
   x = 144,823,146.39/13,859.59
6. Step 6: Final answer
   x = 10,449.31