Finding the Fourth Proportional to 23,098.64, 31,876.06 and 12,488.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,098.64 : 31,876.06 = 12,488.28 : x
2. Step 2: Convert to fraction form
   23,098.64/31,876.06 = 12,488.28/x
3. Step 3: Cross multiply
   23,098.64x = 31,876.06 × 12,488.28
4. Step 4: Simplify right side
   23,098.64x = 398,077,162.58
5. Step 5: Solve for x
   x = 398,077,162.58/23,098.64
6. Step 6: Final answer
   x = 17,233.79