Finding the Fourth Proportional to 10,498.40, 14,496.56 and 9,377.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,498.40 : 14,496.56 = 9,377.36 : x
2. Step 2: Convert to fraction form
   10,498.40/14,496.56 = 9,377.36/x
3. Step 3: Cross multiply
   10,498.40x = 14,496.56 × 9,377.36
4. Step 4: Simplify right side
   10,498.40x = 135,939,461.88
5. Step 5: Solve for x
   x = 135,939,461.88/10,498.40
6. Step 6: Final answer
   x = 12,948.59