Finding the Fourth Proportional to 23,269.82, 32,111.90 and 12,921.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,269.82 : 32,111.90 = 12,921.21 : x
2. Step 2: Convert to fraction form
   23,269.82/32,111.90 = 12,921.21/x
3. Step 3: Cross multiply
   23,269.82x = 32,111.90 × 12,921.21
4. Step 4: Simplify right side
   23,269.82x = 414,924,587.25
5. Step 5: Solve for x
   x = 414,924,587.25/23,269.82
6. Step 6: Final answer
   x = 17,831.02