Finding the Fourth Proportional to 7,003.92, 10,499.40 and 3,106.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.92 : 10,499.40 = 3,106.20 : x
2. Step 2: Convert to fraction form
   7,003.92/10,499.40 = 3,106.20/x
3. Step 3: Cross multiply
   7,003.92x = 10,499.40 × 3,106.20
4. Step 4: Simplify right side
   7,003.92x = 32,613,236.28
5. Step 5: Solve for x
   x = 32,613,236.28/7,003.92
6. Step 6: Final answer
   x = 4,656.43