Finding the Fourth Proportional to 9,498.24, 13,111.17 and 7,147.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,498.24 : 13,111.17 = 7,147.20 : x
2. Step 2: Convert to fraction form
   9,498.24/13,111.17 = 7,147.20/x
3. Step 3: Cross multiply
   9,498.24x = 13,111.17 × 7,147.20
4. Step 4: Simplify right side
   9,498.24x = 93,708,154.22
5. Step 5: Solve for x
   x = 93,708,154.22/9,498.24
6. Step 6: Final answer
   x = 9,865.84