Finding the Fourth Proportional to 13,028.09, 17,982.86 and 8,312.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,028.09 : 17,982.86 = 8,312.37 : x
2. Step 2: Convert to fraction form
   13,028.09/17,982.86 = 8,312.37/x
3. Step 3: Cross multiply
   13,028.09x = 17,982.86 × 8,312.37
4. Step 4: Simplify right side
   13,028.09x = 149,480,185.98
5. Step 5: Solve for x
   x = 149,480,185.98/13,028.09
6. Step 6: Final answer
   x = 11,473.68