Finding the Fourth Proportional to 23,180.48, 31,988.88 and 12,570.09

Step by Step Solution

1. Step 1: Write the proportion equation
   23,180.48 : 31,988.88 = 12,570.09 : x
2. Step 2: Convert to fraction form
   23,180.48/31,988.88 = 12,570.09/x
3. Step 3: Cross multiply
   23,180.48x = 31,988.88 × 12,570.09
4. Step 4: Simplify right side
   23,180.48x = 402,103,100.60
5. Step 5: Solve for x
   x = 402,103,100.60/23,180.48
6. Step 6: Final answer
   x = 17,346.63