Finding the Fourth Proportional to 10,541.95, 15,723.69 and 9,144.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,541.95 : 15,723.69 = 9,144.17 : x
2. Step 2: Convert to fraction form
   10,541.95/15,723.69 = 9,144.17/x
3. Step 3: Cross multiply
   10,541.95x = 15,723.69 × 9,144.17
4. Step 4: Simplify right side
   10,541.95x = 143,780,073.37
5. Step 5: Solve for x
   x = 143,780,073.37/10,541.95
6. Step 6: Final answer
   x = 13,638.85