Finding the Fourth Proportional to 9,498.36, 13,110.39 and 5,518.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,498.36 : 13,110.39 = 5,518.74 : x
2. Step 2: Convert to fraction form
   9,498.36/13,110.39 = 5,518.74/x
3. Step 3: Cross multiply
   9,498.36x = 13,110.39 × 5,518.74
4. Step 4: Simplify right side
   9,498.36x = 72,352,833.71
5. Step 5: Solve for x
   x = 72,352,833.71/9,498.36
6. Step 6: Final answer
   x = 7,617.40