Finding the Fourth Proportional to 7,898.81, 10,895.78 and 5,104.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,898.81 : 10,895.78 = 5,104.31 : x
2. Step 2: Convert to fraction form
   7,898.81/10,895.78 = 5,104.31/x
3. Step 3: Cross multiply
   7,898.81x = 10,895.78 × 5,104.31
4. Step 4: Simplify right side
   7,898.81x = 55,615,397.09
5. Step 5: Solve for x
   x = 55,615,397.09/7,898.81
6. Step 6: Final answer
   x = 7,040.99