Finding the Fourth Proportional to 16,291.34, 22,483.06 and 9,121.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,291.34 : 22,483.06 = 9,121.12 : x
2. Step 2: Convert to fraction form
   16,291.34/22,483.06 = 9,121.12/x
3. Step 3: Cross multiply
   16,291.34x = 22,483.06 × 9,121.12
4. Step 4: Simplify right side
   16,291.34x = 205,070,688.23
5. Step 5: Solve for x
   x = 205,070,688.23/16,291.34
6. Step 6: Final answer
   x = 12,587.71