Finding the Fourth Proportional to 10,494.08, 15,726.72 and 10,178.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,494.08 : 15,726.72 = 10,178.72 : x
2. Step 2: Convert to fraction form
   10,494.08/15,726.72 = 10,178.72/x
3. Step 3: Cross multiply
   10,494.08x = 15,726.72 × 10,178.72
4. Step 4: Simplify right side
   10,494.08x = 160,077,879.40
5. Step 5: Solve for x
   x = 160,077,879.40/10,494.08
6. Step 6: Final answer
   x = 15,254.11