Finding the Fourth Proportional to 17,687.47, 26,506.84 and 8,928.19

Step by Step Solution

1. Step 1: Write the proportion equation
   17,687.47 : 26,506.84 = 8,928.19 : x
2. Step 2: Convert to fraction form
   17,687.47/26,506.84 = 8,928.19/x
3. Step 3: Cross multiply
   17,687.47x = 26,506.84 × 8,928.19
4. Step 4: Simplify right side
   17,687.47x = 236,658,103.82
5. Step 5: Solve for x
   x = 236,658,103.82/17,687.47
6. Step 6: Final answer
   x = 13,379.99