Finding the Fourth Proportional to 19,589.16, 27,013.50 and 12,513

Step by Step Solution

1. Step 1: Write the proportion equation
   19,589.16 : 27,013.50 = 12,513 : x
2. Step 2: Convert to fraction form
   19,589.16/27,013.50 = 12,513/x
3. Step 3: Cross multiply
   19,589.16x = 27,013.50 × 12,513
4. Step 4: Simplify right side
   19,589.16x = 338,019,925.50
5. Step 5: Solve for x
   x = 338,019,925.50/19,589.16
6. Step 6: Final answer
   x = 17,255.46