Finding the Fourth Proportional to 23,426.28, 32,328.27 and 12,815.87

Step by Step Solution

1. Step 1: Write the proportion equation
   23,426.28 : 32,328.27 = 12,815.87 : x
2. Step 2: Convert to fraction form
   23,426.28/32,328.27 = 12,815.87/x
3. Step 3: Cross multiply
   23,426.28x = 32,328.27 × 12,815.87
4. Step 4: Simplify right side
   23,426.28x = 414,314,744.00
5. Step 5: Solve for x
   x = 414,314,744.00/23,426.28
6. Step 6: Final answer
   x = 17,685.90