Finding the Fourth Proportional to 23,426.88, 32,328.54 and 12,816.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,426.88 : 32,328.54 = 12,816.60 : x
2. Step 2: Convert to fraction form
   23,426.88/32,328.54 = 12,816.60/x
3. Step 3: Cross multiply
   23,426.88x = 32,328.54 × 12,816.60
4. Step 4: Simplify right side
   23,426.88x = 414,341,965.76
5. Step 5: Solve for x
   x = 414,341,965.76/23,426.88
6. Step 6: Final answer
   x = 17,686.60