Finding the Fourth Proportional to 10,726.96, 16,056.42 and 10,318.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,726.96 : 16,056.42 = 10,318.72 : x
2. Step 2: Convert to fraction form
   10,726.96/16,056.42 = 10,318.72/x
3. Step 3: Cross multiply
   10,726.96x = 16,056.42 × 10,318.72
4. Step 4: Simplify right side
   10,726.96x = 165,681,702.18
5. Step 5: Solve for x
   x = 165,681,702.18/10,726.96
6. Step 6: Final answer
   x = 15,445.35