Finding the Fourth Proportional to 23,159.49, 31,959.25 and 12,548.90

Step by Step Solution

1. Step 1: Write the proportion equation
   23,159.49 : 31,959.25 = 12,548.90 : x
2. Step 2: Convert to fraction form
   23,159.49/31,959.25 = 12,548.90/x
3. Step 3: Cross multiply
   23,159.49x = 31,959.25 × 12,548.90
4. Step 4: Simplify right side
   23,159.49x = 401,053,373.32
5. Step 5: Solve for x
   x = 401,053,373.32/23,159.49
6. Step 6: Final answer
   x = 17,317.02