Finding the Fourth Proportional to 10,422.27, 15,626.12 and 5,225.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,422.27 : 15,626.12 = 5,225.31 : x
2. Step 2: Convert to fraction form
   10,422.27/15,626.12 = 5,225.31/x
3. Step 3: Cross multiply
   10,422.27x = 15,626.12 × 5,225.31
4. Step 4: Simplify right side
   10,422.27x = 81,651,294.97
5. Step 5: Solve for x
   x = 81,651,294.97/10,422.27
6. Step 6: Final answer
   x = 7,834.31