Finding the Fourth Proportional to 7,900.25, 10,900.91 and 5,104.13

Step by Step Solution

1. Step 1: Write the proportion equation
   7,900.25 : 10,900.91 = 5,104.13 : x
2. Step 2: Convert to fraction form
   7,900.25/10,900.91 = 5,104.13/x
3. Step 3: Cross multiply
   7,900.25x = 10,900.91 × 5,104.13
4. Step 4: Simplify right side
   7,900.25x = 55,639,620.01
5. Step 5: Solve for x
   x = 55,639,620.01/7,900.25
6. Step 6: Final answer
   x = 7,042.77