Finding the Fourth Proportional to 10,131.53, 13,981.55 and 6,149.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.53 : 13,981.55 = 6,149.97 : x
2. Step 2: Convert to fraction form
   10,131.53/13,981.55 = 6,149.97/x
3. Step 3: Cross multiply
   10,131.53x = 13,981.55 × 6,149.97
4. Step 4: Simplify right side
   10,131.53x = 85,986,082.30
5. Step 5: Solve for x
   x = 85,986,082.30/10,131.53
6. Step 6: Final answer
   x = 8,486.98