Finding the Fourth Proportional to 13,861, 19,128.18 and 7,573.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,861 : 19,128.18 = 7,573.42 : x
2. Step 2: Convert to fraction form
   13,861/19,128.18 = 7,573.42/x
3. Step 3: Cross multiply
   13,861x = 19,128.18 × 7,573.42
4. Step 4: Simplify right side
   13,861x = 144,865,740.98
5. Step 5: Solve for x
   x = 144,865,740.98/13,861
6. Step 6: Final answer
   x = 10,451.32