Finding the Fourth Proportional to 9,410.24, 12,986.20 and 6,426.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.24 : 12,986.20 = 6,426.00 : x
2. Step 2: Convert to fraction form
   9,410.24/12,986.20 = 6,426.00/x
3. Step 3: Cross multiply
   9,410.24x = 12,986.20 × 6,426.00
4. Step 4: Simplify right side
   9,410.24x = 83,449,256.27
5. Step 5: Solve for x
   x = 83,449,256.27/9,410.24
6. Step 6: Final answer
   x = 8,867.92