Finding the Fourth Proportional to 23,180.82, 31,989.55 and 12,570.45

Step by Step Solution

1. Step 1: Write the proportion equation
   23,180.82 : 31,989.55 = 12,570.45 : x
2. Step 2: Convert to fraction form
   23,180.82/31,989.55 = 12,570.45/x
3. Step 3: Cross multiply
   23,180.82x = 31,989.55 × 12,570.45
4. Step 4: Simplify right side
   23,180.82x = 402,123,038.80
5. Step 5: Solve for x
   x = 402,123,038.80/23,180.82
6. Step 6: Final answer
   x = 17,347.23