Finding the Fourth Proportional to 16,590.78, 22,895 and 9,516.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,590.78 : 22,895 = 9,516.78 : x
2. Step 2: Convert to fraction form
   16,590.78/22,895 = 9,516.78/x
3. Step 3: Cross multiply
   16,590.78x = 22,895 × 9,516.78
4. Step 4: Simplify right side
   16,590.78x = 217,886,678.10
5. Step 5: Solve for x
   x = 217,886,678.10/16,590.78
6. Step 6: Final answer
   x = 13,133.00