Finding the Fourth Proportional to 13,087.50, 19,604.52 and 10,889.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,087.50 : 19,604.52 = 10,889.16 : x
2. Step 2: Convert to fraction form
   13,087.50/19,604.52 = 10,889.16/x
3. Step 3: Cross multiply
   13,087.50x = 19,604.52 × 10,889.16
4. Step 4: Simplify right side
   13,087.50x = 213,476,755.00
5. Step 5: Solve for x
   x = 213,476,755.00/13,087.50
6. Step 6: Final answer
   x = 16,311.50