Finding the Fourth Proportional to 13,839.53, 19,100.99 and 8,173.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,839.53 : 19,100.99 = 8,173.89 : x
2. Step 2: Convert to fraction form
   13,839.53/19,100.99 = 8,173.89/x
3. Step 3: Cross multiply
   13,839.53x = 19,100.99 × 8,173.89
4. Step 4: Simplify right side
   13,839.53x = 156,129,391.15
5. Step 5: Solve for x
   x = 156,129,391.15/13,839.53
6. Step 6: Final answer
   x = 11,281.41