Finding the Fourth Proportional to 6,999.10, 10,501.05 and 3,106.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,999.10 : 10,501.05 = 3,106.30 : x
2. Step 2: Convert to fraction form
   6,999.10/10,501.05 = 3,106.30/x
3. Step 3: Cross multiply
   6,999.10x = 10,501.05 × 3,106.30
4. Step 4: Simplify right side
   6,999.10x = 32,619,411.62
5. Step 5: Solve for x
   x = 32,619,411.62/6,999.10
6. Step 6: Final answer
   x = 4,660.52