Finding the Fourth Proportional to 7,039.32, 10,557.42 and 2,108.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,039.32 : 10,557.42 = 2,108.31 : x
2. Step 2: Convert to fraction form
   7,039.32/10,557.42 = 2,108.31/x
3. Step 3: Cross multiply
   7,039.32x = 10,557.42 × 2,108.31
4. Step 4: Simplify right side
   7,039.32x = 22,258,314.16
5. Step 5: Solve for x
   x = 22,258,314.16/7,039.32
6. Step 6: Final answer
   x = 3,162.00