Finding the Fourth Proportional to 15,085.15, 22,590.78 and 10,631.86

Step by Step Solution

1. Step 1: Write the proportion equation
   15,085.15 : 22,590.78 = 10,631.86 : x
2. Step 2: Convert to fraction form
   15,085.15/22,590.78 = 10,631.86/x
3. Step 3: Cross multiply
   15,085.15x = 22,590.78 × 10,631.86
4. Step 4: Simplify right side
   15,085.15x = 240,182,010.25
5. Step 5: Solve for x
   x = 240,182,010.25/15,085.15
6. Step 6: Final answer
   x = 15,921.75