Finding the Fourth Proportional to 10,111.82, 15,167.86 and 4,272.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.82 : 15,167.86 = 4,272.54 : x
2. Step 2: Convert to fraction form
   10,111.82/15,167.86 = 4,272.54/x
3. Step 3: Cross multiply
   10,111.82x = 15,167.86 × 4,272.54
4. Step 4: Simplify right side
   10,111.82x = 64,805,288.56
5. Step 5: Solve for x
   x = 64,805,288.56/10,111.82
6. Step 6: Final answer
   x = 6,408.86