Finding the Fourth Proportional to 9,308.05, 12,844.96 and 5,116.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,308.05 : 12,844.96 = 5,116.21 : x
2. Step 2: Convert to fraction form
   9,308.05/12,844.96 = 5,116.21/x
3. Step 3: Cross multiply
   9,308.05x = 12,844.96 × 5,116.21
4. Step 4: Simplify right side
   9,308.05x = 65,717,512.80
5. Step 5: Solve for x
   x = 65,717,512.80/9,308.05
6. Step 6: Final answer
   x = 7,060.29