Finding the Fourth Proportional to 19,590.72, 27,035.12 and 10,638.16

Step by Step Solution

1. Step 1: Write the proportion equation
   19,590.72 : 27,035.12 = 10,638.16 : x
2. Step 2: Convert to fraction form
   19,590.72/27,035.12 = 10,638.16/x
3. Step 3: Cross multiply
   19,590.72x = 27,035.12 × 10,638.16
4. Step 4: Simplify right side
   19,590.72x = 287,603,932.18
5. Step 5: Solve for x
   x = 287,603,932.18/19,590.72
6. Step 6: Final answer
   x = 14,680.62