Finding the Fourth Proportional to 9,499.64, 13,117.56 and 7,137.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.64 : 13,117.56 = 7,137.68 : x
2. Step 2: Convert to fraction form
   9,499.64/13,117.56 = 7,137.68/x
3. Step 3: Cross multiply
   9,499.64x = 13,117.56 × 7,137.68
4. Step 4: Simplify right side
   9,499.64x = 93,628,945.66
5. Step 5: Solve for x
   x = 93,628,945.66/9,499.64
6. Step 6: Final answer
   x = 9,856.05