Finding the Fourth Proportional to 8,472.86, 12,703.38 and 3,726.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,472.86 : 12,703.38 = 3,726.72 : x
2. Step 2: Convert to fraction form
   8,472.86/12,703.38 = 3,726.72/x
3. Step 3: Cross multiply
   8,472.86x = 12,703.38 × 3,726.72
4. Step 4: Simplify right side
   8,472.86x = 47,341,940.31
5. Step 5: Solve for x
   x = 47,341,940.31/8,472.86
6. Step 6: Final answer
   x = 5,587.48