Finding the Fourth Proportional to 16,585.90, 22,888.55 and 9,133.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,585.90 : 22,888.55 = 9,133.90 : x
2. Step 2: Convert to fraction form
   16,585.90/22,888.55 = 9,133.90/x
3. Step 3: Cross multiply
   16,585.90x = 22,888.55 × 9,133.90
4. Step 4: Simplify right side
   16,585.90x = 209,061,566.73
5. Step 5: Solve for x
   x = 209,061,566.73/16,585.90
6. Step 6: Final answer
   x = 12,604.78