Finding the Fourth Proportional to 11,455.89, 15,771.06 and 10,274.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,455.89 : 15,771.06 = 10,274.91 : x
2. Step 2: Convert to fraction form
   11,455.89/15,771.06 = 10,274.91/x
3. Step 3: Cross multiply
   11,455.89x = 15,771.06 × 10,274.91
4. Step 4: Simplify right side
   11,455.89x = 162,046,222.10
5. Step 5: Solve for x
   x = 162,046,222.10/11,455.89
6. Step 6: Final answer
   x = 14,145.23