Finding the Fourth Proportional to 10,111.32, 15,167.12 and 4,272.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.32 : 15,167.12 = 4,272.03 : x
2. Step 2: Convert to fraction form
   10,111.32/15,167.12 = 4,272.03/x
3. Step 3: Cross multiply
   10,111.32x = 15,167.12 × 4,272.03
4. Step 4: Simplify right side
   10,111.32x = 64,794,370.29
5. Step 5: Solve for x
   x = 64,794,370.29/10,111.32
6. Step 6: Final answer
   x = 6,408.10