Finding the Fourth Proportional to 23,483.40, 32,405.64 and 12,871

Step by Step Solution

1. Step 1: Write the proportion equation
   23,483.40 : 32,405.64 = 12,871 : x
2. Step 2: Convert to fraction form
   23,483.40/32,405.64 = 12,871/x
3. Step 3: Cross multiply
   23,483.40x = 32,405.64 × 12,871
4. Step 4: Simplify right side
   23,483.40x = 417,092,992.44
5. Step 5: Solve for x
   x = 417,092,992.44/23,483.40
6. Step 6: Final answer
   x = 17,761.18