Finding the Fourth Proportional to 7,007.10, 10,507.29 and 4,086.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,007.10 : 10,507.29 = 4,086.30 : x
2. Step 2: Convert to fraction form
   7,007.10/10,507.29 = 4,086.30/x
3. Step 3: Cross multiply
   7,007.10x = 10,507.29 × 4,086.30
4. Step 4: Simplify right side
   7,007.10x = 42,935,939.13
5. Step 5: Solve for x
   x = 42,935,939.13/7,007.10
6. Step 6: Final answer
   x = 6,127.49