Finding the Fourth Proportional to 13,839.31, 19,099.65 and 8,175.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,839.31 : 19,099.65 = 8,175.89 : x
2. Step 2: Convert to fraction form
   13,839.31/19,099.65 = 8,175.89/x
3. Step 3: Cross multiply
   13,839.31x = 19,099.65 × 8,175.89
4. Step 4: Simplify right side
   13,839.31x = 156,156,562.42
5. Step 5: Solve for x
   x = 156,156,562.42/13,839.31
6. Step 6: Final answer
   x = 11,283.55