Finding the Fourth Proportional to 7,107.31, 10,659.72 and 3,210.79

Step by Step Solution

1. Step 1: Write the proportion equation
   7,107.31 : 10,659.72 = 3,210.79 : x
2. Step 2: Convert to fraction form
   7,107.31/10,659.72 = 3,210.79/x
3. Step 3: Cross multiply
   7,107.31x = 10,659.72 × 3,210.79
4. Step 4: Simplify right side
   7,107.31x = 34,226,122.38
5. Step 5: Solve for x
   x = 34,226,122.38/7,107.31
6. Step 6: Final answer
   x = 4,815.62