Finding the Fourth Proportional to 10,061.96, 15,083.55 and 9,231.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,061.96 : 15,083.55 = 9,231.57 : x
2. Step 2: Convert to fraction form
   10,061.96/15,083.55 = 9,231.57/x
3. Step 3: Cross multiply
   10,061.96x = 15,083.55 × 9,231.57
4. Step 4: Simplify right side
   10,061.96x = 139,244,847.67
5. Step 5: Solve for x
   x = 139,244,847.67/10,061.96
6. Step 6: Final answer
   x = 13,838.75