Finding the Fourth Proportional to 12,426.90, 17,148.15 and 7,710.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.90 : 17,148.15 = 7,710.27 : x
2. Step 2: Convert to fraction form
   12,426.90/17,148.15 = 7,710.27/x
3. Step 3: Cross multiply
   12,426.90x = 17,148.15 × 7,710.27
4. Step 4: Simplify right side
   12,426.90x = 132,216,866.50
5. Step 5: Solve for x
   x = 132,216,866.50/12,426.90
6. Step 6: Final answer
   x = 10,639.57