Finding the Fourth Proportional to 11,031.34, 16,583.46 and 10,219.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,031.34 : 16,583.46 = 10,219.72 : x
2. Step 2: Convert to fraction form
   11,031.34/16,583.46 = 10,219.72/x
3. Step 3: Cross multiply
   11,031.34x = 16,583.46 × 10,219.72
4. Step 4: Simplify right side
   11,031.34x = 169,478,317.83
5. Step 5: Solve for x
   x = 169,478,317.83/11,031.34
6. Step 6: Final answer
   x = 15,363.35