Finding the Fourth Proportional to 23,100.49, 31,878.52 and 12,490.08

Step by Step Solution

1. Step 1: Write the proportion equation
   23,100.49 : 31,878.52 = 12,490.08 : x
2. Step 2: Convert to fraction form
   23,100.49/31,878.52 = 12,490.08/x
3. Step 3: Cross multiply
   23,100.49x = 31,878.52 × 12,490.08
4. Step 4: Simplify right side
   23,100.49x = 398,165,265.08
5. Step 5: Solve for x
   x = 398,165,265.08/23,100.49
6. Step 6: Final answer
   x = 17,236.23