Finding the Fourth Proportional to 10,707.53, 16,062.71 and 10,117.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,707.53 : 16,062.71 = 10,117.31 : x
2. Step 2: Convert to fraction form
   10,707.53/16,062.71 = 10,117.31/x
3. Step 3: Cross multiply
   10,707.53x = 16,062.71 × 10,117.31
4. Step 4: Simplify right side
   10,707.53x = 162,511,285.61
5. Step 5: Solve for x
   x = 162,511,285.61/10,707.53
6. Step 6: Final answer
   x = 15,177.30