Finding the Fourth Proportional to 16,665.42, 23,000.78 and 9,590.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,665.42 : 23,000.78 = 9,590.48 : x
2. Step 2: Convert to fraction form
   16,665.42/23,000.78 = 9,590.48/x
3. Step 3: Cross multiply
   16,665.42x = 23,000.78 × 9,590.48
4. Step 4: Simplify right side
   16,665.42x = 220,588,520.57
5. Step 5: Solve for x
   x = 220,588,520.57/16,665.42
6. Step 6: Final answer
   x = 13,236.30