Finding the Fourth Proportional to 10,156.53, 15,227.64 and 3,911.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,156.53 : 15,227.64 = 3,911.31 : x
2. Step 2: Convert to fraction form
   10,156.53/15,227.64 = 3,911.31/x
3. Step 3: Cross multiply
   10,156.53x = 15,227.64 × 3,911.31
4. Step 4: Simplify right side
   10,156.53x = 59,560,020.61
5. Step 5: Solve for x
   x = 59,560,020.61/10,156.53
6. Step 6: Final answer
   x = 5,864.21