Finding the Fourth Proportional to 11,031.78, 15,219.61 and 8,167.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,031.78 : 15,219.61 = 8,167.32 : x
2. Step 2: Convert to fraction form
   11,031.78/15,219.61 = 8,167.32/x
3. Step 3: Cross multiply
   11,031.78x = 15,219.61 × 8,167.32
4. Step 4: Simplify right side
   11,031.78x = 124,303,404.73
5. Step 5: Solve for x
   x = 124,303,404.73/11,031.78
6. Step 6: Final answer
   x = 11,267.75