Finding the Fourth Proportional to 16,681.16, 23,019.90 and 9,127.35

Step by Step Solution

1. Step 1: Write the proportion equation
   16,681.16 : 23,019.90 = 9,127.35 : x
2. Step 2: Convert to fraction form
   16,681.16/23,019.90 = 9,127.35/x
3. Step 3: Cross multiply
   16,681.16x = 23,019.90 × 9,127.35
4. Step 4: Simplify right side
   16,681.16x = 210,110,684.27
5. Step 5: Solve for x
   x = 210,110,684.27/16,681.16
6. Step 6: Final answer
   x = 12,595.69