Finding the Fourth Proportional to 23,148.78, 34,722.20 and 9,818.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,148.78 : 34,722.20 = 9,818.10 : x
2. Step 2: Convert to fraction form
   23,148.78/34,722.20 = 9,818.10/x
3. Step 3: Cross multiply
   23,148.78x = 34,722.20 × 9,818.10
4. Step 4: Simplify right side
   23,148.78x = 340,906,031.82
5. Step 5: Solve for x
   x = 340,906,031.82/23,148.78
6. Step 6: Final answer
   x = 14,726.74