Finding the Fourth Proportional to 13,857.72, 19,144.56 and 9,088.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,857.72 : 19,144.56 = 9,088.98 : x
2. Step 2: Convert to fraction form
   13,857.72/19,144.56 = 9,088.98/x
3. Step 3: Cross multiply
   13,857.72x = 19,144.56 × 9,088.98
4. Step 4: Simplify right side
   13,857.72x = 174,004,522.95
5. Step 5: Solve for x
   x = 174,004,522.95/13,857.72
6. Step 6: Final answer
   x = 12,556.50